Home
Português
English தமிழ் Português 中文 Tiếng Việt Filipino ਪੰਜਾਬੀ Tradução automática — a versão em inglês é a versão oficial.

Síndrome do túnel cárpico Folheto In-depth

Esta página foi traduzida automaticamente e ainda não foi verificada por um médico. A versão em inglês é a versão oficial.

O que você está sentindo

A síndrome do túnel carpal ocorre quando o nervo que vai do antebraço para a mão é comprimido no punho. O formigamento e a dormência geralmente aparecem no polegar, no indicador e no dedo médio. Muitas pessoas percebem isso pela primeira vez à noite; o formigamento pode acordá-las, fazendo com que elas agitem ou esfreguem a mão para aliviar a sensação. Os sintomas também tendem a piorar ao acordar ou após usar muito as mãos durante o dia.

À medida que a condição avança, a dormência pode tornar-se constante, e os músculos na base do polegar podem atrofiar, dificultando a pinça e o aperto. Você pode ter dificuldade para segurar uma xícara de café, girar uma maçaneta, abotoar uma camisa ou segurar o celular por muito tempo. Algumas pessoas também sentem dor na mão ou no punho, embora essa dor não se limite apenas aos três dedos mencionados. Isso também é comum, e esses sintomas geralmente melhoram após o tratamento.

Vários fatores aumentam o risco de desenvolver a síndrome do túnel carpal: o excesso de peso e o trabalho manual altamente repetitivo estão associados a ela. A condição é mais comum em mulheres e torna-se mais frequente na meia-idade. Às vezes, aparece junto com outras compressões nervosas, como no cotovelo. Em raras ocasiões, pode ser sinal de um problema de saúde mais amplo; por isso, o cirurgião colhe um histórico completo, em vez de avaliar apenas o punho.

Os sintomas podem melhorar sem cirurgia, especialmente quando são leves ou moderados. Porém, se persistirem ou piorarem, vale a pena procurar avaliação médica. Dormência que surge rapidamente e piora ao longo de algumas horas requer atenção imediata; dor intensa ou contínua também deve ser avaliada sem demora.

O que realmente está acontecendo

Dentro do seu punho existe um túnel estreito, formado por pequenos ossos do carpo de um lado e por uma faixa resistente de tecido, chamada ligamento transverso do carpo, do outro. Por esse túnel passam os tendões responsáveis pela flexão dos dedos, além do nervo mediano, que transmite sensibilidade ao polegar, ao dedo indicador e ao dedo médio. Esse túnel tem muito pouco espaço livre. Qualquer coisa que ocupe espaço extra ou o estreite acaba comprimindo o nervo.

Essa compressão é o cerne do problema. O inchaço das bainhas dos tendões, alterações no volume de líquidos durante a gravidez ou em casos de problemas tireoidianos e renais, uma fratura no punho que cicatrizou gerando tecido ósseo extra, ou simplesmente o espessamento da “tampa” do túnel podem comprimir o nervo. A pressão interna no túnel aumenta, e o nervo reage com os formigamentos, dormência e sintomas noturnos mencionados anteriormente. Quando essa pressão permanece elevada por meses ou anos, o próprio nervo sofre danos; por isso a dormência pode tornar-se constante e os músculos do polegar podem atrofiar.

Os médicos descrevem dois padrões. A síndrome do túnel do carpo aguda é rara: a pressão sobe repentinamente, geralmente após alguma lesão, e a mão requer atenção urgente. Muito mais comum é o tipo crônico, em que a pressão aumenta lentamente. Inicialmente, ela pode subir apenas ocasionalmente, por exemplo quando o punho permanece dobrado por algum tempo, como durante o sono. Com o tempo, a pressão permanece elevada o tempo todo, e os sintomas tornam-se constantes.

O tratamento deriva desse quadro clínico. Tala e outros métodos não cirúrgicos podem aliviar sintomas leves a moderados, diminuindo a pressão. Quando isso não é suficiente, realiza-se uma cirurgia chamada liberação do túnel do carpo, na qual se corta o ligamento que forma a “tampa” do túnel. Isso amplia o espaço e alivia a pressão sobre o nervo. A maioria dos pacientes obtém alívio total ou parcial; 97% experimentam esse benefício. O nervo então se recupera ao seu próprio ritmo, e a sensibilidade pode continuar melhorando por um período mais longo do que se acreditava anteriormente.

O que podemos fazer a respeito

O Dr. Kieran Hirpara, cirurgião de membros superiores no Mater Private Hospital Rockhampton, começa com as opções menos invasivas adequadas ao seu caso. Em geral, os pacientes são encaminhados à nossa clínica pelo médico de família; caso um fisioterapeuta tenha sugerido que você nos procurasse, ainda assim será necessário um encaminhamento do seu médico de família para que você tenha direito ao reembolso do Medicare. Na consulta, colhemos o histórico clínico, examinamos sua mão e solicitamos exames de imagem, se necessário. No caso da síndrome do túnel carpal, geralmente iniciamos com tratamento não cirúrgico e só consideramos a cirurgia caso não haja melhora suficiente.

O primeiro passo costuma ser o uso de uma tala para o punho. Ela mantém o punho reto, reduzindo a pressão dentro do túnel e melhorando a circulação sanguínea e a função nervosa. Você deverá usá-la por pelo menos 4 semanas; a melhora costuma ser observada já nas primeiras 2 semanas. O uso contínuo da tala pode ser mais eficaz do que usá-la apenas à noite. Uma tala que mantém o punho reto alivia os sintomas melhor do que aquela que o dobra para trás. A fisioterapia e os exercícios de alongamento podem ser associados a esse tratamento; algumas pessoas percebem que as técnicas de drenagem linfática também ajudam a aliviar a dor. Quando utilizadas precocemente e de forma consistente, essas medidas podem controlar sintomas leves a moderados e, em alguns casos, até evitar a cirurgia.

Caso a tala sozinha não seja suficiente, podemos aplicar uma injeção de cortisona (esteroide) dentro do túnel. Isso reduz o inchaço ao redor do nervo. A combinação da injeção com o uso da tala gera uma redução maior dos sintomas, melhor recuperação funcional e melhor função nervosa aos 12 semanas, em comparação ao uso isolado da injeção. Não utilizamos comprimidos de esteroide para essa condição, pois até mesmo um tratamento de curta duração traz riscos a longo prazo ainda pouco conhecidos.

Se essas medidas não controlarem seus sintomas, a cirurgia pode ser a próxima opção. A liberação do túnel carpal consiste na incisão do ligamento que forma a “tampa” do túnel, aliviando assim a pressão sobre o nervo. A cirurgia é mais eficaz que o uso da tala para aliviar os sintomas. Trata-se de uma decisão compartilhada: conversaremos sobre o que você já tentou, qual a gravidade dos seus sintomas e o que é importante para você, para decidirmos juntos se a cirurgia é a melhor opção.

O que esperar

A síndrome do túnel carpal geralmente não permanece inalterada. Os sintomas leves podem desaparecer por conta própria ou com tratamentos simples, como o uso de talas. Algumas pessoas obtêm alívio a longo prazo com injeções de cortisona, especialmente quando o efeito é imediato. Contudo, quando os sintomas são graves ou já duram bastante tempo, raramente desaparecem sem tratamento. Se deixados sem cuidados, o formigamento tende a tornar-se constante e a força da mão pode diminuir.

Com o tratamento adequado, a maioria das pessoas melhora. A grande maioria daqueles que se submetem à cirurgia obtém alívio total ou parcial. A sensibilidade e a função da mão geralmente melhoram progressivamente durante as primeiras 12 semanas; essa melhora pode persistir por muito tempo, inclusive após um ano. A recuperação do nervo é lenta; portanto, seja paciente com sua mão.

A rapidez da melhora depende, em parte, da gravidade inicial dos sintomas. Se o formigamento e a dormência eram leves ou moderados, tendem a desaparecer mais rapidamente do que quando o nervo ficou comprimido por longo período. Caso os sintomas fossem graves, a recuperação pode demorar mais e talvez não seja completa nem mesmo após um ano, especialmente no que diz respeito ao formigamento. Mesmo assim, a maioria das pessoas percebe redução significativa dos sintomas.

Há alguns pontos importantes a saber. Algumas pessoas notam um aumento temporário do formigamento após a liberação do nervo. Os sintomas que afetam outras regiões além dos três dedos principais também tendem a desaparecer; mais de 85% desses casos têm resolução. Para pacientes diabéticos, a cirurgia traz benefícios semelhantes aos observados em pessoas sem diabetes.

Às vezes, os sintomas não desaparecem completamente ou retornam após um período de alívio. Isso é raro, e geralmente é possível identificar a causa. Um pequeno número de pacientes necessita de uma segunda cirurgia; esse risco é maior no primeiro ano do que posteriormente. Mesmo nesses casos, a segunda liberação do nervo costuma gerar melhoria significativa na função da mão e na qualidade de vida.

Seu cirurgião conversará com você sobre onde seus sintomas se enquadram nesse espectro, para que você saiba quais são as expectativas realistas de recuperação para o seu caso.

Quando procurar ajuda médica

Consulte seu clínico geral se o formigamento ou dormência no polegar, indicador ou dedo médio persistir, acordar você à noite ou não melhorar após algumas semanas de uso de talas. Solicite avaliação por um especialista caso a dormência se torne constante, sua força de preensão diminua ou os músculos na base do polegar pareçam mais achatados do que antes. Dor intensa ou contínua também merece avaliação imediata, em vez de ser ignorada.

Procure o pronto-socorro se a dormência surgir de repente e piorar ao longo de algumas horas, especialmente após uma lesão no punho. Esse quadro exige avaliação no mesmo dia, pois a pressão dentro do túnel pode aumentar rapidamente e o nervo precisa ser aliviado sem demora.

Existem alguns sinais de alerta que demandam investigação urgente, e não apenas uma consulta de rotina. Dor intensa e constante, dormência sem nenhum gatilho aparente ou sintomas que não correspondam ao padrão habitual de afetar três dedos podem indicar algo menos comum. Comunique esses sinais ao seu clínico geral com clareza, pois eles determinam a urgência do atendimento.

Se você já realizou a liberação do túnel e os sintomas retornaram ou nunca desapareceram completamente, volte ao seu cirurgião. Exames de imagem ou testes nervosos geralmente revelam o motivo, e uma segunda cirurgia ajuda muitas pessoas nessa situação.

Em maior profundidade

Advanced reading: the deeper science (optional)

Esta seção aborda temas que vão além do necessário para suas próprias decisões de tratamento. A síndrome do túnel do carpo merece essa leitura adicional, pois representa a cirurgia mais bem-sucedida na cirurgia da mão; por isso, as três situações em que o prognóstico difere são justamente as que vale a pena compreender.

As alterações causadas pelo diabetes são menores do que se esperaria

Pacientes diabéticos costumam ser informados de que os resultados do tratamento serão piores, e isso é uma suposição razoável: o diabetes danifica os nervos, e esta é uma cirurgia nervosa.

Contudo, as evidências não corroboram isso. Ao analisar 2.869 pacientes, não houve diferença significativa na melhora dos resultados, em praticamente todos os parâmetros avaliados após a liberação do túnel cárpico, entre pacientes diabéticos e não diabéticos; a única exceção foi a velocidade de condução sensorial, uma medida elétrica que dificilmente seria percebida clinicamente [1].

Na verdade, o diabetes pode influenciar o estado basal do nervo, mas não parece impedir que a descompressão cirúrgica seja eficaz. A própria conclusão dos autores é que o foco deve ser na melhoria do tratamento da neuropatia diabética, e não na negação da cirurgia que pode trazer benefícios aos pacientes.

Três métodos para realizar o procedimento e por que optamos pelo método mais antigo

O túnel do carpo pode ser liberado por meio de uma incisão aberta, endoscopicamente através de um ou dois pequenos orifícios, ou percutaneamente, usando uma lâmina do tamanho de uma agulha guiada por ultrassom. Os três métodos cortam a mesma estrutura – o ligamento transverso do carpo – e a discussão entre eles diz respeito apenas às primeiras semanas pós-operatórias, não à resolução dos sintomas de formigamento.

A comparação entre o método aberto e o endoscópico já foi feita diversas vezes. Ao reunir ensaios clínicos randomizados envolvendo 1.596 pacientes, verificou-se que ambos os métodos apresentaram resultados semelhantes no alívio dos sintomas; porém, a liberação endoscópica proporcionou melhor recuperação funcional e retorno mais rápido ao trabalho, além de ser mais segura em relação às complicações medidas [2].

A liberação guiada por ultrassom é o método mais recente e o que provavelmente você verá em propagandas, geralmente descrito como “sem incisão” e realizado em consultórios com anestesia local, e não em salas de cirurgia. Há dois pontos importantes a serem considerados antes de aceitar essa descrição: na verdade não é totalmente “sem incisão”, pois ainda há uma pequena perfuração; os estudos publicados descrevem isso como uma incisão “menor”, não como ausência total de incisão. Além disso, as evidências, embora promissoras, são menos robustas do que a propaganda sugere. A análise conjunta de ensaios randomizados baseia-se em três estudos com 221 pacientes: os resultados funcionais foram melhores com o método guiado por ultrassom, e os pacientes retornaram às atividades normais 20,8 dias antes em comparação ao método aberto [4]. Duas grandes comparações realizadas em 2026, com grupos de pacientes pareados quanto às características clínicas – 356 pacientes comparados ao método aberto [5] e 372 ao método endoscópico [6] – demonstraram que o método é seguro e eficaz; requer menos anestesia, menor uso de opioides pós-operatórios e deixa os pacientes mais satisfeitos com o resultado estético da ferida, embora demore mais para ser executado do que os outros métodos. Esses benefícios se mantiveram por seis anos [7].

O contraponto importante raramente aparece nas propagandas, e diz respeito sobretudo a quem está manuseando o aparelho de ultrassom.

Um estudo de Innsbruck, de 2025, descreveu pacientes que precisaram de uma segunda cirurgia aberta após a liberação guiada por ultrassom, devido a divisão incompleta do ligamento, lesões nervosas e lesões arteriais [8]. O dado crucial aqui é o profissional que realizou o procedimento: dos catorze casos, onze foram feitos por radiologistas, um por cirurgião geral e dois por cirurgiões de mão experientes. Os desfechos variaram conforme o profissional. Em um dos casos dos cirurgiões de mão, uma artéria foi danificada durante o procedimento; o sangramento foi detectado imediatamente, os cirurgiões converteram a técnica para abertura cirúrgica na hora, controlaram a hemorragia, completaram a liberação e o paciente não teve mais problemas. No caso do cirurgião geral, a paciente apresentou formigamento desde o despertar da anestesia; recebeu duas injeções de cortisona sem sucesso e, nove meses depois, precisou de reconstrução do nervo mediano com três enxertos do nervo sural. Esse é o argumento a favor da experiência do profissional: não se trata de dizer que complicações nunca ocorrem para cirurgiões experientes, mas sim que eles conseguem identificá-las e corrigi-las na mesma sessão cirúrgica.

Contudo, é preciso cautela ao avaliar esse estudo, pois ele foi contestado publicamente e parcialmente corrigido. Um grupo de radiologia intervencionista de alto volume afirmou que sua recomendação central “não é sustentada pelos dados apresentados”; o estudo original não informava o número total de procedimentos realizados nem a taxa de complicações, portanto não pode ser usado como base para estimar riscos. Esse grupo já realizou mais de 2.000 liberações desse tipo sob um protocolo padronizado; mesmo que todos os onze casos atribuídos a radiologistas tivessem precisado de revisão cirúrgica, a taxa de complicações seria inferior a 5 por 1.000 [10]. Os autores originais acabaram admitindo que três desses casos haviam sido classificados erroneamente e não representavam, de fato, divisão incompleta do ligamento; descreveram isso como “um erro crítico tanto nos dados quanto na sua interpretação” [10].

O ponto em que ambas as partes concordam é o que realmente importa, e vale a pena deixar isso bem claro: essa operação deve ser realizada por alguém com experiência comprovada em ultrassonografia nervosa, seguindo uma técnica padronizada, e contando com apoio imediato de um cirurgião de mão caso seja necessário converter o procedimento para uma cirurgia aberta. A curva de aprendizado exige cerca de 30 procedimentos até que o tempo cirúrgico se estabilize [9]. Se você está considerando essa opção, essas são as perguntas justas a se fazer: quantas vezes o cirurgião já realizou esse procedimento, segundo qual protocolo, e o que acontece caso seja preciso transformá-lo em uma cirurgia aberta hoje mesmo, e não daqui a nove meses.

Quanto à comparação de segurança, ponto em que o marketing insiste mais, a taxa combinada de complicações foi de 7,1% nos casos com orientação ultrassonográfica, contra 5,6% na cirurgia aberta; o intervalo de confiança para essa diferença variou entre 0,04 e 15,10 [4]. Esse intervalo é tão amplo que praticamente não fornece informação alguma. “Sem diferença nas complicações” aqui significa, na verdade, “ninguém ainda mediu esse dado com precisão suficiente para afirmar algo”.

O Dr. Hirpara realiza a liberação aberta do túnel carpal. O motivo é o que só a cirurgia aberta oferece: a possibilidade de visualizar diretamente o ligamento e o nervo, confirmar que a liberação foi completa sob visão direta, e lidar com quaisquer variações anatômicas — como um músculo extra ou um ramo atípico do nervo — conforme forem encontradas, sem precisar contorná-las. Esse método não exige equipamento especial e continua sendo a técnica preferencial para cirurgias de revisão ou em casos de anatomia atípica, independentemente da abordagem que o cirurgião costuma utilizar.

O trade-off é real, e merece ser exposto com clareza: as evidências acima sugerem que você provavelmente retornaria ao trabalho mais rapidamente após uma liberação endoscópica ou guiada por ultrassom. Contudo, essas evidências não indicam que o resultado final seria diferente. Se para você um retorno mais rápido ao trabalho é mais importante do que a visualização direta do nervo, isso é uma preferência legítima, e vale a pena discuti-la na sua consulta, em vez de decidir apenas com base no que se lê na internet.

O nervo que ainda dói após a cirurgia pode não ser aquele que foi liberado

Esta é a conclusão mais importante a ser retida. Em um grupo de 7.867 pacientes submetidos a cirurgias para tratamento de compressão nervosa, aproximadamente 3% passaram por descompressão de um outro nervo no mesmo braço dentro de um ano [3].

Esses 3% representam um número pequeno em termos absolutos, mas têm grande significado clínico. A compressão nervosa frequentemente não afeta apenas um local: a mesma pessoa pode apresentar compressão do nervo mediano no punho e compressão do nervo ulnar no cotovelo; os sintomas dessas condições são tão semelhantes que um pode mascarar o outro. Quando a mão ainda não melhora após uma liberação técnica bem-sucedida, a pergunta nem sempre é “a operação falhou?”, mas sim “existia outro local de compressão o tempo todo?”. Os autores ressaltam especificamente que pacientes com síndrome do túnel carpal e síndrome do túnel cubital podem se beneficiar de uma descompressão simultânea [3].

Por que a cirurgia é tão eficaz

A mecânica do processo é excepcionalmente simples, e isso explica grande parte do sucesso da cirurgia. O túnel cárpico é um espaço fechado, com um “piso” rígido formado pelos ossos do carpo e um ligamento transverso do carpo resistente que funciona como “teto”. A pressão interna aumenta; o nervo mediano é a estrutura mais frágil ali presente, e acaba sendo afetado. A incisão no ligamento transforma esse compartimento fechado em um espaço aberto, fazendo com que a pressão caia imediatamente.

É por isso que o alívio da dor noturna costuma ser quase instantâneo, enquanto a dormência leva meses para desaparecer: a compressão cessa no dia da cirurgia, mas o nervo precisa se recuperar por conta própria, e essa recuperação ocorre lentamente, da ponta para a raiz do nervo. A persistência da dormência após seis semanas geralmente indica que o nervo está se recuperando conforme o esperado, e não que a cirurgia falhou.

Referências

[1] Moradi A, Sadr A, Ebrahimzadeh MH, Hassankhani GG, Mehrad-Majd H. O diabetes mellitus altera os resultados da liberação do túnel carpiano? Evidências de uma revisão sistemática e meta-análise. J Hand Ther. 2020;33(3):394-401. https://doi.org/10.1016/j.jht.2020.01.003

[2] Chen L, Duan X, Huang X, Lv J, Peng K, Xiang Z. Eficácia e segurança da descompressão endoscópica versus aberta do túnel carpiano: uma meta-análise de ensaios clínicos randomizados. Arch Orthop Trauma Surg. 2014;134(4):585-93. https://doi.org/10.1007/s00402-013-1898-z

[3] Mendelaar NH, Hundepool CA, Hoogendam L, Duraku LS, Zöphel OT, Selles RW, et al. Múltiplas síndromes de compressão no mesmo membro superior: prevalência, fatores de risco e resultados. J Hand Surg Am. 2023;48(5):479-88. https://doi.org/10.1016/j.jhsa.2023.01.024

[4] Ekhtiari S, Phillips M, Dhillon D, Shahabinezhad A, McMains C, Dzwierzynski B, Bhandari M. Liberação do túnel carpiano com orientação por ultrassom versus técnica aberta ou mini-aberta: uma revisão sistemática e meta-análise de ensaios clínicos randomizados. J Hand Surg Glob Online. 2025;7(2):121-126. https://doi.org/10.1016/j.jhsg.2024.04.001

[5] Marwin VM, Lincoski CJ, Nelson JT, Watt JF, Moeller AT, Perry PE, et al. Comparação entre liberação do túnel carpiano guiada por ultrassom e técnica aberta, ajustada por escore de propensão: resultados aos três meses do registro MISSION. J Hand Surg Glob Online. 2026;8(2):100931. https://doi.org/10.1016/j.jhsg.2025.100931

[6] Marwin VM, Nelson JT, Watt JF, Verheyden JR, Perry PE, Warhold LG, et al. Comparação prospectiva multicêntrica, ajustada por escore de propensão, entre liberação do túnel carpiano guiada por ultrassom e técnica endoscópica. J Hand Surg Glob Online. 2026;8(3):100974. https://doi.org/10.1016/j.jhsg.2026.100974

[7] Cano LC, Leiby BM, Shum LC, Ward MG, Joseph AE. Resultados clínicos da liberação do túnel carpiano com orientação por ultrassom em mais de 100 pacientes, após dois a seis anos. J Hand Surg Glob Online. 2024;6(3):354-359. https://doi.org/10.1016/j.jhsg.2024.02.004

[8] Köhl M, Seeher U, Kaiser P, Schmidle G, Zimmermann R, Sigl S. Complicações após liberação do túnel carpiano guiada por ultrassom: uma série de casos. J Hand Surg Eur Vol. 2025;50(8):1050-1053. https://doi.org/10.1177/17531934251318533

[9] Castro-Menéndez M, Balvís-Balvís P, Denisiuk M, Vázquez-Cancela O. Avaliação da curva de aprendizado para a liberação percutânea guiada por ultrassom na síndrome do túnel carpiano. J Hand Surg Eur Vol. 2025;50(10):1365-1370. https://doi.org/10.1177/17531934251338970

[10] Gruber H, Honold S, Skalla-Oberherber E, Loizides A. RE: Köhl M, Seeher U, Kaiser P, Schmidle G, Zimmermann R, Sigl S. Complicações após liberação do túnel carpiano guiada por ultrassom: uma série de casos. J Hand Surg Eur Vol. 2026;51(3):384-385. https://doi.org/10.1177/17531934251412674

Reviewed by AI synthesis (v2) — pending human review · 18 May 2026.

Want the clinical detail? Read the clinician version.

Talk to your treating clinician for advice specific to you.

For an appointment with the CQ Hand + Upper Limb team, ask your GP about a referral or visit www.cqupperlimb.com.

Evidence & references

This is the clinical evidence summary written for health professionals. It is technical, and it lists the research this page was built from. You do not need to read it to understand your treatment or to make a decision about it.

Overview

  • Patients with end-stage carpal tunnel syndrome do not have worse long-term patient-reported outcomes after carpal tunnel release compared with the general population [3].
  • Ongoing debates in the diagnosis and management of carpal tunnel syndrome include the utility of diagnostic tests, outcome measurement standardization, and cost-effectiveness calculations [7].
  • Carpal tunnel decompression surgery is safe and effective, with 97% of patients experiencing complete or partial relief [11].
  • The AAOS developed Appropriate Use Criteria to help determine the appropriateness of treatments for carpal tunnel syndrome by synthesizing evidence with expert opinion [14].
  • Standards, guidelines, and options for electrodiagnostic studies of carpal tunnel syndrome are defined based on a critical review of the literature [15].
  • Patients in high-allergy cohorts can be expected to benefit from carpal tunnel release [16].
  • A rational plan of therapy is available for each category of complications of carpal tunnel syndrome [17].
  • Successful treatment of carpal tunnel syndrome is commonly defined based on a patient-reported outcome measure (PROM) [27].
  • Nonsurgical methods for mild to moderate carpal tunnel syndrome are effective and underused, emphasizing patient choice and the slight complications of conservative treatment compared to surgical risks [28].
  • The AAOS Appropriate Use Criteria provide guidance on diagnostic and treatment options for carpal tunnel syndrome, including scenarios where electrodiagnostic studies are or are not necessary and the appropriateness of surgical versus nonsurgical interventions [31].
  • Universal acceptance of diagnostic criteria for carpal tunnel syndrome remains elusive without prospective controlled studies verifying improved performance [35].
  • Evidence available to purchasers and clinicians attempting to manage demand for carpal tunnel decompression is usually sparse and rarely comprehensive [84].
  • Universally applied and validated measures for hand surgery outcomes are rarely available [84].

Anatomy & Pathophysiology

Epidemiology and Risk Factors

  • Carpal tunnel syndrome is the most common compression neuropathy of the upper extremity [5].
  • The mean age at diagnosis for carpal tunnel syndrome is 50 years [5].
  • Carpal tunnel syndrome is more common in women than men by nearly four times [5].
  • By the age of 65 years, the prevalence of carpal tunnel syndrome is approximately 5.1% for women and 1.3% for men [5].
  • Risk factors for carpal tunnel syndrome include obesity, pregnancy, hypothyroidism, diabetes mellitus, and menopause [5].
  • The American Academy of Orthopaedic Surgeons guidelines list body mass index (BMI) and high hand repetition rate as factors with strong evidence of increased risk for development of carpal tunnel syndrome [5].
  • Obesity, diabetes, use of hand-held vibratory tools, and repeated forceful movements of the wrist and hand are causes of impaired median nerve function [117].
  • Wrist ratio was the only significant predictor in a logistic regression analysis for carpal tunnel syndrome risk [107].
  • A quantitative analysis of published scientific evidence indicates that the etiology of carpal tunnel syndrome is largely structural, genetic, and biological, with environmental and occupational factors such as repetitive hand use playing a minor and more debatable role [124].

Pathogenesis and Mechanisms

  • Acute carpal tunnel syndrome is a compartment syndrome of the carpal tunnel characterized by a rapid rise and sustained increase in interstitial pressure within the carpal canal [93].
  • Chronic carpal tunnel syndrome is a compressive neuropathy characterized by an insidious rise in carpal tunnel interstitial pressure of a moderate degree [93].
  • The increase in interstitial pressure in chronic carpal tunnel syndrome may initially be intermittent but is likely to be elevated constantly with time and increased symptoms [93].
  • Factors involved in the pathogenesis of carpal tunnel syndrome include bony abnormalities of the carpal bones, acromegaly, and flexion or extension of the wrist [4].
  • Factors increasing the contents of the carpal canal include forearm and wrist fractures, dislocations and subluxations, posttraumatic arthritis, musculotendinous variants, aberrant muscles, local tumors, persistent medial artery, hypertrophic synovium, and hematoma [4].
  • Neuropathic conditions involved in the pathogenesis of carpal tunnel syndrome include diabetes mellitus, alcoholism, double-crush syndrome, and exposure to industrial solvents [4].
  • Inflammatory conditions involved in the pathogenesis of carpal tunnel syndrome include rheumatoid arthritis, gout, nonspecific tenosynovitis, and infection [4].
  • Alterations of fluid balance involved in the pathogenesis of carpal tunnel syndrome include pregnancy, menopause, eclampsia, thyroid disorders, renal failure, long-term hemodialysis, Raynaud disease, obesity, lupus erythematosus, scleroderma, amyloidosis, and Paget disease [4].
  • External forces involved in the pathogenesis of carpal tunnel syndrome include vibration and direct pressure [4].
  • No consensus has been reached regarding the specific role that risk factors such as hormonal changes or edema play in the pathophysiology of carpal tunnel syndrome [5].

Clinical Presentation and Diagnosis

  • Carpal tunnel syndrome classically presents with nocturnal paresthesias in a median nerve distribution that gradually worsen as nerve injury progresses [5].
  • Late in the disease course, carpal tunnel syndrome leads to sensory loss and thenar muscle atrophy [5].
  • Nocturnal paresthesias in the radial three digits of the hand is nearly pathognomonic for carpal tunnel syndrome [104].
  • Paresthesias in carpal tunnel syndrome occur characteristically in "fixed wrist activities" such as reading, driving, or use of a computer keyboard or mouse [104].
  • Patients with advanced nerve compression in carpal tunnel syndrome may present with weakness and atrophy of the abductor pollicis brevis and opponens pollicis muscles [104].
  • A positive Tinel sign at the wrist has a reported specificity ranging from 55% to 100% [5].
  • The Phalen test has a reported specificity ranging from 54% to 98% [5].
  • Nerve conduction studies assess focal demyelination by delayed conduction velocities of the median nerve at the wrist [5].
  • Needle electromyography is considered an optional adjunct to nerve conduction studies and is mostly used to differentiate carpal tunnel syndrome from other possible causes [5].
  • Documenting muscle atrophy and fibrillations on needle EMG assists with identifying severity of the disease and prognostication [5].
  • Ultrasound sensitivity for carpal tunnel syndrome is reported to be over 97% when the median nerve diameter is greater than 10 mm² at the level of the pisiform [4].
  • In patients with negative electrodiagnostic studies but a clinical diagnosis of carpal tunnel syndrome, high-resolution ultrasonography has a sensitivity of 73% if the cutoff of 9.4 mm² at the inlet of the carpal tunnel is used [4].
  • The diagnosis of carpal tunnel syndrome should be based on clinical acumen and physical examination in the vast majority of patients, with ancillary tests reserved for patients without clear presentations [4].
  • MRI is not routinely used for diagnosis of carpal tunnel syndrome, though reports are promising especially with newer techniques such as diffusion tensor imaging [4].
  • Carpal tunnel syndrome impairs the performance of precision pinch movement as indicated by increased variability [123].
  • Reduced longitudinal excursion of the median nerve at the carpal tunnel has been observed in carpal tunnel syndrome patients [126].
  • Transverse movement of the median nerve is most marked with forearm supination, irrespective of other changes in the kinetic chain [86].

Anatomical Considerations

  • The flexor retinaculum includes the distal deep fascia of the forearm proximally, the transverse carpal ligament, and the aponeurosis between the thenar and hypothenar muscles [37].
  • A successful carpal tunnel release usually requires division of all components of the flexor retinaculum [37].
  • The palmar cutaneous sensory branch of the median nerve lies in the interval between the palmaris longus and the flexor carpi radialis tendons [37].
  • The superficial palmar arterial arch is located 5 to 8 mm distal to the distal margin of the transverse carpal ligament [37].
  • Fibers of the transverse carpal ligament can extend distally farther than expected [37].
  • The median nerve palmar cutaneous branch is located deep to the thenar crease and radial to the palmaris longus [129].
  • Splints that immobilize the wrist in a functional position of extension do not minimize carpal tunnel pressure [119].

Classification

  • The diagnosis of carpal tunnel syndrome should shift from a dichotomous, all-or-none approach to one that considers probabilities of disease [24].
  • Tools such as the hand diagram and CTS 6 are utilized to form baseline probabilities and guide management based on estimated probability and severity [24].
  • Grading severity in electrodiagnostic reports involves grading the median neuropathy rather than the syndrome itself [75].
  • Grading severity in electrodiagnostic reports fulfills the obligation of electrodiagnostic physicians to provide the referring source with the best possible interpretation and synthesis of physiologic data regarding the degree of nerve pathology [75].
  • A retrospective study of 105 wrists classified carpal tunnel syndrome onset after distal radius fracture into acute (< 1 week), subacute (1, < 12 weeks), and delayed (≥ 12 weeks) groups [102].
  • In a retrospective study of 105 wrists, the severity of carpal tunnel syndrome after distal radius fracture was classified as Grade 1 (mild) in 47 cases, Grade 2 (moderate) in 45 cases, and Grade 3 (severe) in 13 cases [102].
  • In a retrospective study of 105 wrists, distal motor latency was classified as within normal in 13 cases, prolonged in 60 cases, and not examined in 32 cases [102].
  • In a retrospective study of 105 wrists, distal radius fractures were classified using the AO classification system as A 1-3 (61 cases), B 1-3 (6 cases), C 1-3 (32 cases), and not classified (6 cases) [102].
  • In a retrospective study of 105 wrists, fracture reduction was classified as unacceptable in 69 cases and acceptable in 36 cases [102].
  • In a retrospective study of 105 wrists, acute onset carpal tunnel syndrome was associated with C-type fractures, while subacute and delayed onset groups were predominantly associated with A-type fractures [102].
  • In a study of 90 subjects, EM grading for carpal tunnel syndrome was distributed as 18.9% at grade 1, 26.7% at grade 2, 42.2% at grade 3, and 12.2% at grade 4 or more [128].
  • Existing anatomical classifications of the median nerve in the carpal tunnel cannot be relied upon entirely [69].

Clinical Presentation

Epidemiology and Risk Factors

  • Carpal tunnel syndrome is the commonest peripheral nerve problem in the United Kingdom [56].

Symptoms and Signs

  • Classically, carpal tunnel syndrome presents with nocturnal paresthesias in a median nerve distribution that gradually worsen as nerve injury progresses [5].
  • As nerve injury progresses in carpal tunnel syndrome, it leads to sensory loss and thenar muscle atrophy late in the disease course [5].
  • Many patients with carpal tunnel syndrome report pain in the hand and may report symptoms that are not directly referable to the median nerve [5].
  • A positive Tinel sign at the wrist can aid in the diagnosis of carpal tunnel syndrome [5].
  • Development of symptoms after a provocative Phalen maneuver can aid in the diagnosis of carpal tunnel syndrome [5].
  • The reported specificity of the Tinel sign at the wrist for carpal tunnel syndrome varies from 55% to 100% [5].
  • The reported specificity of the Phalen test for carpal tunnel syndrome varies from 54% to 98% [5].
  • Provocative tests for carpal tunnel syndrome are based on enhancing or inducing the symptoms of a damaged median nerve as it passes through the carpal tunnel [12].
  • Specialists do not consider pain without paresthesia or a noncharacteristic symptom distribution as characteristic of carpal tunnel syndrome [21].
  • Symptoms and signs characteristic of carpal tunnel syndrome significantly, but incompletely coincided with electrophysiological testing [50].

Diagnostic Modalities and Limitations

  • The diagnosis of carpal tunnel syndrome is made by clinical history, physical examination, and supportive diagnostic testing with exclusion of other possible disorders [5].
  • Nerve conduction studies are a useful diagnostic tool for carpal tunnel syndrome because focal demyelination can be assessed by delayed conduction velocities of the median nerve at the wrist [5].
  • Documenting muscle atrophy and fibrillations on needle EMG can assist with identifying severity of carpal tunnel syndrome and help with prognostication [5].
  • Ultrasonography can diagnose carpal tunnel syndrome by identification of enlarged, hypoechoic median nerve fascicles proximal to the carpal tunnel [5].
  • There is no universally agreed-upon reference standard test for diagnosing carpal tunnel syndrome [49].
  • No standardized diagnostic criteria have been established for carpal tunnel syndrome [51].
  • Electrophysiological testing has been reported to have 13% false-negative and 18% false-positive rates [51].
  • Ultrasound sensitivity for carpal tunnel syndrome has been reported to be over 97% when the median nerve diameter is greater than 10 mm² at the level of the pisiform [4].
  • There is a severe discordance between the estimated prevalence of mild-to-moderate carpal tunnel syndrome based on clinical signs and symptoms (73%) versus electrodiagnostic studies and ultrasound (51%) [54].
  • Ultrasonography is capable of discovering the cause of median nerve compression, especially in cases with an atypical clinical presentation [25].
  • MRI and/or ultrasonography imaging should be considered in patients who have new, persistent, or recurrent symptoms after surgery to delineate the etiology of the symptoms [5].

Pathogenesis and Etiology

  • Carpal tunnel syndrome can be an early manifestation of systemic amyloidosis [23].
  • An elongated muscle belly of the flexor digitorum superficialis can cause carpal tunnel syndrome [25].
  • An interosseous ganglion of the lunate can cause carpal tunnel syndrome [55].

Investigations

Clinical Diagnosis and Provocative Tests

  • The American Academy of Orthopaedic Surgeons guidelines list body mass index and high hand repetition rate as factors with strong evidence of increased risk for development of carpal tunnel syndrome [5].
  • Late in the disease course of carpal tunnel syndrome, sensory loss and thenar muscle atrophy occur [5].
  • A positive Tinel sign at the wrist or development of symptoms after provocative Phalen maneuver can aid in the diagnosis of carpal tunnel syndrome [5].
  • Tinel sign and Phalen maneuver are most reliable as adjuncts to other diagnostic tests for carpal tunnel syndrome [5].
  • The diagnosis of carpal tunnel syndrome should be based on clinical acumen and physical examination in the vast majority of patients [4].
  • Ancillary tests for carpal tunnel syndrome should be reserved for patients without clear presentations [4].

Electrodiagnostic Testing

  • Nerve conduction studies remain a useful diagnostic tool in carpal tunnel syndrome as focal demyelination can be assessed by delayed conduction velocities of the median nerve at the wrist [5].
  • Needle electromyography is currently considered an optional adjunct to nerve conduction studies and is mostly used to differentiate carpal tunnel syndrome from other possible causes [5].
  • Documenting muscle atrophy and fibrillations on needle electromyography can assist with identifying severity of carpal tunnel syndrome and help with prognostication [5].
  • Thenar atrophy and abductor pollicis brevis weakness can often be detected on physical examination for carpal tunnel syndrome [5].
  • Pre-operative electrodiagnostic testing predicts time to resolution of symptoms after carpal tunnel release [1].
  • Postoperative electrodiagnostic testing may be helpful in assessing recurrent symptoms after carpal tunnel release [4].
  • The false-negative rate of electrodiagnostic testing for carpal tunnel syndrome is reported to be 10% [4].
  • Electrodiagnostic testing does not increase the diagnostic value of the four commonly used clinical tests for carpal tunnel syndrome (abnormal hand diagram, abnormal Semmes-Weinstein, positive Durkan compression, and night pain) [4].
  • Electrodiagnostic testing does not predict the degree of functional recovery or reemployment after carpal tunnel release [4].
  • With clinical evaluation as the reference standard, electrodiagnostic testing is not helpful in making a diagnosis of pronator syndrome concurrent with carpal tunnel syndrome [96].

Ultrasonography

  • Advances in ultrasonography technology have allowed rapid diagnosis of carpal tunnel syndrome by identification of enlarged, hypoechoic median nerve fascicles proximal to the carpal tunnel [5].
  • Controversy remains as to whether ultrasonography evaluation could replace electrophysiology in the diagnosis of carpal tunnel syndrome [5].
  • There is sufficient evidence for orthopaedic and hand surgeons to seriously consider using ultrasound as the first-line confirmatory diagnostic tool for carpal tunnel syndrome [81].
  • High resolution ultrasound is a valid and accurate diagnostic modality in carpal tunnel syndrome and correlates with carpal tunnel syndrome severity [90].
  • Ultrasonography is a useful method in the diagnostic evaluation of carpal tunnel syndrome, capable of discovering the cause of median nerve compression, especially in cases with an atypical clinical presentation [25].
  • When carpal tunnel syndrome is suspected, an ultrasound examination can confirm the diagnosis and uncover the underlying etiology [99].
  • Nerve conduction studies may still be required even when ultrasound confirms carpal tunnel syndrome and uncovers the underlying etiology [99].
  • The study demonstrates the value of routine sonographic assessment when evaluating patients with carpal tunnel syndrome [100].
  • Space occupying lesions of the carpal tunnel may be easily missed, and a carpal tunnel view and ultrasound scanning in suspected cases is mandatory [95].

Magnetic Resonance Imaging

  • Reports of MRI in carpal tunnel syndrome are promising, especially with newer techniques such as diffusion tensor imaging [4].
  • MRI is not routinely used for diagnosis of carpal tunnel syndrome [4].
  • A major advantage of MRI for carpal tunnel syndrome is its high soft-tissue contrast, which gives detailed images of bones and soft tissues [4].
  • The physician should not routinely evaluate patients suspected of having carpal tunnel syndrome with magnetic resonance imaging [68].
  • Imaging can be used to help evaluate any other lesions of concern and can simultaneously add support for the diagnosis of carpal tunnel syndrome by demonstrating changes in the cross-sectional area of the median nerve at the level of the inlet [79].
  • MRI-based measurements of median nerve cross-sectional area, particularly at the inlet level, suggest that relying solely on cross-sectional area measurements may not be an optimal diagnostic strategy for carpal tunnel syndrome in patients with equivocal clinical symptoms [108].
  • MRI of patients 3 months after successful endoscopic carpal tunnel release does not demonstrate a discrete gap or separation in the flexor retinaculum overlying the median nerve [88].
  • MRI may be useful for evaluating median nerve morphology after endoscopic carpal tunnel release [88].
  • In cases with swelling or tenderness on the area of wrist flexion creases, it is important to obtain a carpal tunnel view, and MRI and/or CT should be supplemented in order to rule out space occupying lesions around the carpal tunnel if necessary [105].
  • With clinical evaluation as the reference standard, MRI is not helpful in making a diagnosis of pronator syndrome concurrent with carpal tunnel syndrome [96].

Other Imaging and Diagnostic Considerations

  • The physician should not routinely evaluate patients suspected of having carpal tunnel syndrome with computed tomography [68].
  • The physician should not routinely evaluate patients suspected of having carpal tunnel syndrome with pressure-specified sensorimotor devices in the wrist and hand [68].
  • Carpal tunnel syndrome caused by a space occupying lesion is rare and more complicated than idiopathic carpal tunnel syndrome [110].
  • Amyloidosis diagnosis after carpal tunnel release is rare but is associated with poor outcomes [98].

Treatment

Non-Operative Management

  • Initial conservative management via hand therapy, activity modification with splinting, and corticosteroid injection is supported by strong evidence for mild and/or moderate carpal tunnel syndrome symptoms [5].
  • Splinting is a basic, easily implemented, inexpensive, and effective intervention for carpal tunnel syndrome [85].
  • Steroid injection into the carpal tunnel is effective and may be superior to splinting alone when combined with splinting [85].
  • A short pulse of systemic steroid treatment might be effective for carpal tunnel syndrome, although the risk of long-term complications from even short systemic exposure is not fully known [85].
  • Systemic steroid treatment is superior to placebo but is not as effective as local steroid injection for carpal tunnel syndrome [85].
  • In people with carpal tunnel syndrome, steroid injection combined with splinting resulted in modestly greater reduction of symptoms, functional recovery, and improvement of nerve function at 12-week follow-up compared to steroid injection alone [65].
  • Local steroid injection for carpal tunnel syndrome has an overall success rate of 45% after a mean follow-up of 16 months [66].
  • Nonsurgical methods for mild to moderate carpal tunnel syndrome are effective and underused, with slight complications compared to surgical risks [28].
  • Both surgical and conservative interventions had treatment benefit in carpal tunnel syndrome [64].
  • Patients with early carpal tunnel syndrome can be managed with conservative treatment, but carpal tunnel release should be recommended to patients who have failed nonsurgical treatment [13].
  • The AAOS Appropriate Use Criteria provide guidance on diagnostic and treatment options for carpal tunnel syndrome, including the appropriateness of surgical versus nonsurgical interventions [31].

Operative Management

  • Surgical decompression of the transverse carpal ligament is the benchmark procedure for the treatment of carpal tunnel syndrome [5].
  • There has been no definitive difference in long-term functional outcome between open and endoscopic carpal tunnel release [5].
  • Patients undergoing endoscopic carpal tunnel release often have a more abbreviated recovery with less incisional pain compared to open release [5].
  • Endoscopic carpal tunnel release is associated with an increased cost of the procedure and a slightly higher rate of iatrogenic transient neurapraxia compared to open release [5].
  • Postoperative complications of carpal tunnel release include nerve, arterial, or tendon injury with a 0.5% incidence and complex regional pain syndrome with a 2.1% to 5% incidence [5].
  • Mini-open carpal tunnel release is performed with a limited, targeted incision of 1.5 to 2 cm, with low complication rates and high rates of patient satisfaction [5].
  • No approach has yet demonstrated superiority over other techniques currently in use in large, randomized controlled surgical trials [5].
  • Open and endoscopic carpal tunnel release procedures provided similar symptom relief and hand strength and sensibility recovery, and were safe for patients with carpal tunnel syndrome [61].
  • Both open and endoscopic methods have equal efficacy in relieving symptoms of carpal tunnel syndrome [67].
  • Carpal tunnel release surgery continues to evolve with new diagnostic techniques and less-invasive surgical methods [38].

Recurrent or Unrelieved Symptoms

  • The recurrence rate after primary carpal tunnel release is approximately 2% [46].
  • Complications and failures after primary carpal tunnel release are estimated to be 3% to 19% [46].
  • Unrelieved symptoms may lead to repeat operation in 12% of patients [46].
  • Findings reported at reoperation for recurrent carpal tunnel syndrome include incomplete release of the transverse carpal ligament, re-formation of the flexor retinaculum, scarring in the carpal tunnel, median or palmar cutaneous neuroma, palmar cutaneous nerve entrapment, recurrent granulomatous or inflammatory tenosynovitis, and hypertrophic scar in the skin [46].
  • Procedures for incomplete ligament release include reexploration, rerelease of the transverse carpal ligament, excision, and release of re-formed retinaculum [46].
  • Procedures for fibrosis or painful scar include epineurolysis, local muscle flaps, local or remote free fat or radial forearm fascial grafts, excision, Z-plasty of painful scar, nerve wrapping, or interposition materials [46].
  • Procedures for recurrent tenosynovitis include tenosynovectomy and appropriate medical management, such as antibiotics for infectious granulomatous tenosynovitis from fungi or mycobacteria [46].
  • Patients with normal preoperative electrodiagnostic studies, patients who had filed for compensation, and patients with ulnar nerve symptoms have been reported to have results significantly worse than patients without these findings [46].
  • Temporary relief following a corticosteroid injection is a good prognostic sign when considering reoperation for recurrent carpal tunnel syndrome [46].
  • Recurrent carpal tunnel syndrome was demonstrated more often in patients with diabetes [46].
  • Incomplete release of the flexor retinaculum and scarring of the median nerve were common intraoperative findings in all patients with recurrent carpal tunnel syndrome [46].
  • Persistent symptoms and more than one prior carpal tunnel syndrome had higher odds of not changing or worsening postoperative pain [46].
  • Higher preoperative pain, use of pain medication, and workers’ compensation were significant predictors of higher postoperative average pain [46].
  • The transverse carpal ligament that reforms is indistinguishable from the native ligament, making determination of incomplete release not possible [46].
  • Neural adhesion lysis and early nerve gliding exercises are essential in the management of problematic recurrent carpal tunnel cases [46].
  • Synovial or hypothenar fat pad flaps are rarely necessary in the management of problematic recurrent carpal tunnel cases [46].
  • Recurrent symptoms after carpal tunnel release can occur and are thought to be due to scarring, tenosynovitis, and/or adhesive tethering [5].
  • Rates of recurrent symptoms after carpal tunnel release may be as high as 4.5% [5].
  • Recurrent symptoms should be differentiated from persistent symptoms, which may be due to an incompletely divided ligament during the index procedure or incorrect diagnosis [5].
  • Repeat open median nerve neurolysis is often performed when symptoms recur, either by itself or in conjunction with local tissue flaps or wraps [5].
  • Neither repeat open median nerve neurolysis alone nor in conjunction with local tissue flaps or wraps has demonstrated superiority for treatment of recurrent carpal tunnel symptoms [5].
  • Effective management of recalcitrant carpal tunnel syndrome requires an accurate diagnosis and a comprehensive treatment strategy [62].
  • Revision carpal tunnel release is less successful than primary release, with up to 40% of patients having unfavorable outcomes [62].

Prognosis and Recovery

  • Timing of recovery after carpal tunnel decompression is related to preoperative electrodiagnostic studies [47].
  • Reinnervation in patients with decreased conduction velocity and increased latency will take just a few months [47].
  • Axonal regeneration, indicated by decreased compound muscle action potential, will take much longer than reinnervation [47].
  • Following carpal tunnel decompression for mild or moderate nerve compression, there will be return of “painless” sensation to the digits innervated by the median nerve [47].
  • Reinnervation of the thenar muscles will occur following carpal tunnel decompression, although it takes longer than sensory recovery [47].
  • Return of motor function may not be complete in patients with severe carpal tunnel syndrome [47].
  • Patients can expect restoration of full range of motion at the wrist after carpal tunnel decompression [47].
  • Patients with severe carpal tunnel syndrome and thenar atrophy have been described to experience a postoperative flare with complaints of pain, stiffness, and swelling likely caused by a reinnervation hypersensitivity [47].
  • Postoperative flare in patients with severe carpal tunnel syndrome and thenar atrophy is treated with hand therapy and occasionally a short burst of oral steroids [47].
  • Patients can experience pillar pain after carpal tunnel release, which is likely microneuroma related [47].
  • The risk of pillar pain can be minimized by placing the incision in the watershed area between the median and ulnar palmar cutaneous nerves, approximately 6 mm ulnar to the thenar crease [47].
  • If pillar pain develops after carpal tunnel release, patients are referred to hand therapy for scar massage and desensitization [47].

Complications

  • The long-term outcome of carpal tunnel release is favourable with a rate of recurrence of 2.5% and a rate of persistence of 3.75% [30].
  • At an average follow-up of 4.5 years, 28% of hands had persistent symptoms after carpal tunnel release by the Agee endoscopic technique [40].
  • In a long-term follow-up study of dual-portal endoscopic release, 91.1% of patients reported being pain-free in the operated hand [97].
  • In a long-term follow-up study of dual-portal endoscopic release, 83.3% of patients reported the absence of hypesthesia [97].
  • In a long-term follow-up study of dual-portal endoscopic release, 81.1% of patients reported no paresthesia [97].
  • In a long-term follow-up study of dual-portal endoscopic release, 4 cases reported hypesthesia worse than preoperatively [97].
  • Transection of the motor branch of the ulnar nerve is a complication of two-portal endoscopic carpal tunnel release [2].
  • Poor outcome for neural surgery (epineurotomy or neurolysis) for carpal tunnel syndrome compared with carpal tunnel release alone has been demonstrated in a meta-analysis of global outcomes [2].
  • Carpal tunnel syndrome can be an early manifestation of systemic amyloidosis, and implementation of a straightforward algorithm using biopsy samples during carpal tunnel release will allow for early diagnosis of these progressive and lethal diseases [23].
  • An infectious etiology should be considered in atypical carpal tunnel syndrome presentations or when symptoms persist after surgery [94].
  • Delayed carpal tunnel syndrome is typically due to alterations in carpal tunnel anatomy and requires etiology-specific treatment [45].
  • Patients with a history of ulnar nerve lesions are at a significantly increased risk of developing carpal tunnel syndrome, especially within the first 2 years [32].

Recovery

Surgical Outcomes and Prognosis

  • At an average follow-up of 4.5 years, 28% of hands had persistent symptoms after carpal tunnel release by the Agee endoscopic technique, but results were scarcely different from the conventional technique with no patient requiring reoperation [40].
  • Clinical severity of carpal tunnel syndrome at intake is the most important factor in estimating symptom relief after surgical treatment [133].
  • Patients with mild or moderate carpal tunnel syndrome experience a faster time to resolution of daytime numbness and tingling when compared with patients with severe carpal tunnel syndrome [130].
  • Symptoms experienced outside of the median nerve distribution had a high likelihood of resolution after carpal tunnel release, with over 85% of symptoms in each of the anatomic zones studied resolving [136].
  • A significant correlation was found between patients with an incomplete release and lack of a symptom-free period after carpal tunnel release [135].
  • Patients undergoing revision open carpal tunnel decompression for recurrent carpal tunnel syndrome experience a significant improvement in function and health-related quality of life [78].
  • Long-term improvement in patients with diabetes remained after carpal tunnel release to the same extent as for patients without diabetes [33].

Non-Operative and Natural History

  • The symptoms of carpal tunnel syndrome may improve without surgery, but further studies are needed to understand the natural history of the disorder [9].
  • One-third of patients with carpal tunnel syndrome had a long-term beneficial effect from corticosteroid injection, especially when they had a good initial response [36].

Minimally Invasive Techniques

  • Ultrasound-guided carpal tunnel release quickly improves hand function and reduces hand discomfort; improvement persisted beyond one year [39].

Disease Progression and Context

  • Idiopathic median neuropathy at the carpal tunnel acts more like a steadily and inevitably progressive disease than a self-limiting one [43].
  • Carpal tunnel syndrome is a condition that requires attention to service delivery, awareness of systemic disease, and long-term nerve biology, rather than just surgical competence [10].

Key Evidence

  • [L4] Patients with end-stage carpal tunnel syndrome do not have worse long-term patient-reported outcomes after carpal tunnel release compared with the general population. [3] (10.1177/1558944719857815)
  • [L5] The article highlights ongoing debates in the diagnosis and management of carpal tunnel syndrome, including the utility of diagnostic tests, outcome measurement standardization, and cost-effectiveness calculations, while encouraging high-quality research to resolve these issues. [7] (10.1177/17531934221080631)
  • [L3] The symptoms of carpal tunnel syndrome may improve without surgery, but further studies are needed to understand the natural history of the disorder. [9] (10.1177/1753193411410155)
  • [L5] Carpal tunnel syndrome is a condition that requires attention to service delivery, awareness of systemic disease, and long-term nerve biology, rather than just surgical competence. [10] (10.1177/17531934261433793)
  • [L3] Carpal tunnel decompression surgery is safe and effective, with 97% of patients experiencing complete or partial relief. [11] (10.1054/jhsb.2001.0616)
  • [L4] [12] (10.1038/ncpneuro0216)
  • [Paper] Patients with early carpal tunnel syndrome can be managed with conservative treatment, but carpal tunnel release should be recommended to patients who have failed nonsurgical treatment. [13] (10.1016/b978-0-12-385157-4.00652-7)
  • [L5] The AAOS developed Appropriate Use Criteria to help determine the appropriateness of treatments for carpal tunnel syndrome by synthesizing evidence with expert opinion. [14] (10.5435/jaaos-d-17-00451)
  • [L1] The document defines standards, guidelines, and options for EDX studies of carpal tunnel syndrome based on a critical review of the literature. [15] (10.1212/wnl.58.11.1589)
  • [L4] Consequently, patients in high-allergy cohorts can be expected to benefit from carpal tunnel release. [16] (10.1177/15589447241284304)
  • [L5] A rational plan of therapy is available for each category of complications of carpal tunnel syndrome. [17] (10.1016/s0749-0712(21)00316-4)
  • [L4] Specialists do not consider pain without paresthesia or a noncharacteristic symptom distribution as characteristic of carpal tunnel syndrome. [21] (10.1016/j.jhsa.2024.07.004)
  • [L5] Carpal tunnel syndrome can be an early manifestation of systemic amyloidosis, and implementation of a straightforward algorithm using biopsy samples during carpal tunnel release will allow for early diagnosis of these progressive and lethal diseases. [23] (10.1016/j.jhsa.2025.07.017)
  • [L5] The diagnosis of carpal tunnel syndrome should shift from a dichotomous, all-or-none approach to one that considers probabilities of disease, utilizing tools like the hand diagram and CTS 6 to form baseline probabilities and guide management based on estimated probability and severity. [24] (10.1016/j.jhsa.2009.12.034)
  • [L5] Ultrasonography is a very useful method in the diagnostic evaluation of carpal tunnel syndrome, capable of discovering the cause of median nerve compression, especially in cases with an atypical clinical presentation. [25] (10.1007/s11552-012-9435-z)
  • [L1] Successful treatment of carpal tunnel syndrome is commonly defined based on a patient-reported outcome measure (PROM), highlighting recent efforts to measure outcomes from the patient’s perspective. [27] (10.1177/1558944720949951)
  • [L5] The authors argue that nonsurgical methods for mild to moderate carpal tunnel syndrome are effective and underused, emphasizing patient choice and the slight complications of conservative treatment compared to surgical risks. [28] (10.1016/j.jhsa.2009.05.009)
  • [L3] The long-term outcome of carpal tunnel release is favourable with a rate of recurrence of 2.5% and a rate of persistence of 3.75%. [30] (10.1302/0301-620x.99b10.bjj-2016-0587.r2)
  • [L5] The AAOS Appropriate Use Criteria provide guidance on diagnostic and treatment options for carpal tunnel syndrome, including scenarios where electrodiagnostic studies are or are not necessary and the appropriateness of surgical versus nonsurgical interventions. [31] (10.5435/jaaos-d-17-00454)
  • [L2] Patients with a history of ulnar nerve lesions are at a significantly increased risk of developing carpal tunnel syndrome, especially within the first 2 years. [32] (10.1016/j.jhsg.2026.100970)
  • [L2] Long-term improvement in patients with diabetes remained after carpal tunnel release to the same extent as for patients without diabetes. [33] (10.1016/j.jhsa.2014.01.012)
  • [L5] Universal acceptance of diagnostic criteria for carpal tunnel syndrome remains elusive without prospective controlled studies verifying improved performance. [35] (10.1016/j.jhsa.2012.07.041)
  • [L3] One-third of patients with carpal tunnel syndrome had a long-term beneficial effect from corticosteroid injection, especially when they had a good initial response. [36] (10.1177/1753193412469580)
  • [L4] Carpal tunnel release surgery continues to evolve with new diagnostic techniques and less-invasive surgical methods. [38] (10.1097/gox.0000000000002692)
  • [L4] Ultrasound-guided carpal tunnel release quickly improves hand function and reduces hand discomfort; improvement persisted beyond one year. [39] (10.2214/ajr.20.24383)
  • [L4] At an average follow-up of 4.5 years, 28% of hands had persistent symptoms, but results were scarcely different from the conventional technique with no patient requiring reoperation. [40] (10.1054/jhsb.1999.0226)
  • [L5] The authors state that idiopathic median neuropathy at the carpal tunnel acts more like a steadily and inevitably progressive disease than a self-limiting one, and that hand surgeons are at their best when treating objective pathophysiology with evidence-based disease modifying treatments. [43] (10.1177/1753193414526674)
  • [L5] Delayed carpal tunnel syndrome is typically due to alterations in carpal tunnel anatomy and requires etiology-specific treatment. [45] (10.1016/j.hcl.2017.09.003)
  • [L2] There is no universally agreed-upon reference standard test for diagnosing carpal tunnel syndrome, and clinicians use symptoms and signs alone, electrodiagnostic testing, or both. [49] (10.1016/j.jhsa.2014.03.039)
  • [L2] Symptoms and signs characteristic of carpal tunnel syndrome significantly, but incompletely coincided with electrophysiological testing. [50] (10.1177/1753193412461860)
  • [L3] [51] (10.1016/j.jhsa.2010.05.020)
  • [L5] There is a severe discordance between the estimated prevalence of mild-to-moderate carpal tunnel syndrome based on clinical signs and symptoms (73%) versus electrodiagnostic studies and ultrasound (51%), calling into question whether clinicians can confidently diagnose patients with mild-to-moderate CTS. [54] (10.1097/corr.0000000000002822)
  • [L4] This case highlights the importance of considering uncommon aetiologies in patients with atypical symptoms of carpal tunnel syndrome. [55] (10.1177/17531934241227809)
  • [L4] Carpal tunnel syndrome is the commonest peripheral nerve problem in the United Kingdom and is readily treatable if recognised early. [56] (10.1136/bmj.39282.623553.ad)
  • [L1] The procedures provided similar symptom relief and hand strength and sensibility recovery, and were safe for patients with carpal tunnel syndrome. [61] (10.1002/brb3.439)
  • [L5] Effective management of recalcitrant carpal tunnel syndrome requires an accurate diagnosis and a comprehensive treatment strategy, as revision carpal tunnel release is less successful than primary release with up to 40% of patients having unfavorable outcomes. [62] (10.5435/jaaos-d-18-00004)
  • [L1] Both surgical and conservative interventions had treatment benefit in carpal tunnel syndrome. [64] (10.1186/1749-799x-6-17)
  • [L1] In people with carpal tunnel syndrome, steroid injection combined with splinting resulted in modestly greater reduction of symptoms, functional recovery, and improvement of nerve function at 12-week follow-up compared to steroid injection alone. [65] (10.1016/j.apmr.2017.01.018)
  • [L4] Local steroid injection for carpal tunnel syndrome has an overall success rate of 45% after a mean follow-up of 16 months. [66] (10.1016/j.jhsa.2021.09.022)
  • [L1] Both methods have equal efficacy in relieving symptoms of carpal tunnel syndrome. [67] (10.1136/bmj.38863.632789.1f)
  • [L4] One cannot rely entirely on the existing anatomical classifications of the MN in the carpal tunnel. [69] (10.1016/j.injury.2020.03.024)
  • [L5] Grading severity of carpal tunnel syndrome in the electrodiagnostic report, with the understanding that it is the median neuropathy being graded and not the syndrome, fulfills the obligation of electrodiagnostic physicians to provide the referring source with the best possible interpretation and synthesis of physiologic data regarding the degree of nerve pathology. [75] (10.1002/mus.23824)
  • [L4] This study confirms that patients undergoing revision open carpal tunnel decompression for recurrent carpal tunnel syndrome experience a significant improvement in function and health-related quality of life. [78] (10.1177/1753193419875945)
  • [Paper] Imaging can be used to help evaluate any other lesions of concern and can also simultaneously add support for the diagnosis of CTS by demonstrating changes in the CSA of the median nerve at the level of the inlet. [79] (10.2106/jbjs.25.01685)
  • [L5] There is sufficient evidence for orthopaedic and hand surgeons to seriously consider using ultrasound as the first-line confirmatory diagnostic tool for carpal tunnel syndrome. [81] (10.2106/jbjs.o.01067)
  • [L5] The paper argues that evidence available to purchasers and clinicians attempting to manage demand for carpal tunnel decompression is usually sparse and rarely comprehensive, and that universally applied and validated measures for hand surgery outcomes are rarely available. [84] (10.1054/jhsb.1999.0328)
  • [L5] [85] (10.1016/j.jhsa.2009.01.010)
  • [L4] Transverse movement of the median nerve is most marked with forearm supination, irrespective of other changes in the kinetic chain. [86] (10.1258/ht.2011.011017)
  • [L2] MRI of patients 3 months after successful endoscopic carpal tunnel release does not demonstrate a discrete gap or separation in the flexor retinaculum overlying the median nerve but may be useful for evaluating median nerve morphology. [88] (10.1016/j.jhsa.2012.11.013)
  • [L3] High resolution ultrasound is a valid and accurate diagnostic modality in carpal tunnel syndrome and correlated to CTS severity. [90] (10.1186/s12891-019-3010-5)
  • [L5] [93] (10.1016/s0749-0712(21)00307-3)
  • [L4] The authors suggest considering an infectious etiology in atypical carpal tunnel syndrome presentations or when symptoms persist after surgery. [94] (10.1016/j.jhsa.2017.05.027)
  • [L5] Space occupying lesions of the carpal tunnel may be easily missed, and a carpal tunnel view and ultrasound scanning in suspected cases is mandatory. [95] (10.1007/s12593-012-0076-9)
  • [L4] With clinical evaluation as the reference standard, electrodiagnostic, ultrasound, and MRI are not helpful in making a diagnosis of pronator syndrome concurrent with carpal tunnel syndrome. [96] (10.1016/j.jhsa.2020.06.006)
  • [L4] [97] (10.1227/01.neu.0000335784.90217.9d)
  • [L4] Amyloidosis diagnosis after carpal tunnel release is rare but is associated with poor outcomes. [98] (10.2106/jbjs.20.02093)
  • [L5] When carpal tunnel syndrome is suspected an ultrasound examination can confirm the diagnosis and uncover the underlying etiology, but nerve conduction studies may still be required. [99] (10.1177/0883073810387299)
  • [L4] The study demonstrates the value of routine sonographic assessment when evaluating patients with carpal tunnel syndrome. [100] (10.1016/j.jhsg.2025.100903)
  • [L4] [102] (10.1007/s00776-010-1496-7)
  • [L4] In cases with swelling or tenderness on the area of wrist flexion creases, it is important to obtain a carpal tunnel view, and MRI and/or CT should be supplemented in order to rule out SOLs around the carpal tunnel, if necessary. [105] (10.3349/ymj.2009.50.2.257)
  • [L4] Wrist ratio was the only significant predictor in the logistic regression analysis. [107] (10.1002/ca.23198)
  • [L3] MRI-based measurements of median nerve CSA, particularly at the inlet level, suggest that relying solely on CSA measurements may not be an optimal diagnostic strategy for CTS in patients with equivocal clinical symptoms. [108] (10.2106/jbjs.25.00787)
  • [L4] Carpal tunnel syndrome caused by a space occupying lesion is rare and more complicated than idiopathic carpal tunnel syndrome. [110] (10.1177/1753193411414352)
  • [L3] Obesity, diabetes, use of hand-held vibratory tools, and repeated forceful movements of the wrist and hand are causes of impaired median nerve function. [117] (10.1186/1471-2474-14-240)
  • [L4] Splints that immobilize the wrist in a functional position of extension do not minimize carpal tunnel pressure. [119] (10.2106/00004623-199511000-00008)
  • [L3] Carpal tunnel syndrome impairs the performance of precision pinch movement as indicated by the increased variability. [123] (10.1016/j.jhsa.2008.02.030)
  • [L3] According to a quantitative analysis of published scientific evidence, the etiology of carpal tunnel syndrome is largely structural, genetic, and biological, with environmental and occupational factors such as repetitive hand use playing a minor and more debatable role. [124] (10.1016/j.jhsa.2008.01.004)
  • [L3] Further studies are merited to determine if reduced median nerve excursion at the carpal tunnel is clinically relevant in CTS, and can be influenced by movement-based interventions. [126] (10.1016/j.apmr.2007.02.015)
  • [L4] [128] (10.1177/1558944717725379)
  • [L4] Patients with mild or moderate carpal tunnel syndrome experience a faster time to resolution of daytime numbness and tingling when compared with patients with severe carpal tunnel syndrome. [130] (10.1177/1753193415576248)
  • [L2] Clinical severity of carpal tunnel syndrome at intake is the most important factor in estimating symptom relief after surgical treatment. [133] (10.1016/j.jhsa.2018.05.017)
  • [L4] A significant correlation was found between patients with an incomplete release and lack of a symptom-free period after carpal tunnel release. [135] (10.1016/s0749-0712(21)00315-2)
  • [L4] Symptoms experienced outside of the median nerve distribution had a high likelihood of resolution after carpal tunnel release, with over 85% of symptoms in each of the anatomic zones studied resolving. [136] (10.1016/j.jhsa.2009.04.024)

References

[1] Campbell S Operative Orthopaedics 4 Volume Set. COMPRESSIVE NEUROPATHIES OF THE HAND, FOREARM, AND ELBOW > REFERENCES > CARPAL TUNNEL SYNDROME.

[2] Campbell S Operative Orthopaedics 4 Volume Set. COMPRESSIVE NEUROPATHIES OF THE HAND, FOREARM, AND ELBOW > CARPAL TUNNEL SYNDROME.

[3] Outcomes of Mini-Open Carpal Tunnel Release in Patients With Unrecordable Preoperative Nerve Conduction Potentials at a Minimum of 5 Years. HAND. 2019. DOI: 10.1177/1558944719857815

[4] Campbell S Operative Orthopaedics 4 Volume Set. COMPRESSIVE NEUROPATHIES OF THE HAND, FOREARM, AND ELBOW > CARPAL TUNNEL SYNDROME > BOX 77.1.

[5] Orthopaedic Knowledge Update 13 Ebook Without Multimedia. Neuropathies, Vascular Conditions: Buerger’s, Raynaud’s; Degenerative Conditions > Upper Extremity Neuropathies > Carpal Tunnel Syndrome.

[7] What’s new in carpal tunnel syndrome? Commentary and personal opinions. Journal of Hand Surgery (European Volume). 2022. DOI: 10.1177/17531934221080631

[9] A 6-year outcome of patients who cancelled carpal tunnel surgery. Journal of Hand Surgery (European Volume). 2011. DOI: 10.1177/1753193411410155

[10] Editorial. The simplicity and complexity of carpal tunnel syndrome. Journal of Hand Surgery (European Volume). 2026. DOI: 10.1177/17531934261433793

[11] Carpal Tunnel Syndrome: The Correlation between Outcome, Symptoms and Nerve Conduction Study Findings. Journal of Hand Surgery. 2001. DOI: 10.1054/jhsb.2001.0616

[12] Diagnosing carpal tunnel syndrome—clinical criteria and ancillary tests. Nature Clinical Practice Neurology. 2006. DOI: 10.1038/ncpneuro0216

[13] Carpal Tunnel Syndrome. Encyclopedia of the Neurological Sciences. 2014. DOI: 10.1016/b978-0-12-385157-4.00652-7

[14] Management of Carpal Tunnel Syndrome. Journal of the American Academy of Orthopaedic Surgeons. 2018. DOI: 10.5435/jaaos-d-17-00451

[15] Practice parameter: Electrodiagnostic studies in carpal tunnel syndrome [RETIRED]. Neurology. 2002. DOI: 10.1212/wnl.58.11.1589

[16] The Effect of Patient-Reported Allergies on Patient-Reported Outcomes in Carpal Tunnel Release. HAND. 2024. DOI: 10.1177/15589447241284304

[17] COMPLICATIONS OF NONOPERATIVE AND OPERATIVE TREATMENT OF CARPAL TUNNEL SYNDROME. Hand Clinics. 1996. DOI: 10.1016/s0749-0712(21)00316-4

[21] Variation in Interpretation of Provocative Tests for Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2025. DOI: 10.1016/j.jhsa.2024.07.004

[23] Carpal Tunnel Syndrome: A Potential Early, Red-Flag Sign of Amyloidosis. The Journal of Hand Surgery. 2025. DOI: 10.1016/j.jhsa.2025.07.017

[24] Diagnosis of Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2010. DOI: 10.1016/j.jhsa.2009.12.034

[25] Elongated muscle belly of the flexor digitorum superficial causing carpal tunnel syndrome. HAND. 2012. DOI: 10.1007/s11552-012-9435-z

[27] Outcome Metrics in the Treatment of Carpal Tunnel Syndrome: A Systematic Review. HAND. 2020. DOI: 10.1177/1558944720949951

[28] In Justification of Nonsurgical Treatment for Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2009. DOI: 10.1016/j.jhsa.2009.05.009

[30] Long-term outcome of carpal tunnel release surgery in patients with severe carpal tunnel syndrome. The Bone & Joint Journal. 2017. DOI: 10.1302/0301-620x.99b10.bjj-2016-0587.r2

[31] AAOS Appropriate Use Criteria: Management of Carpal Tunnel Syndrome. Journal of the American Academy of Orthopaedic Surgeons. 2018. DOI: 10.5435/jaaos-d-17-00454

[32] Incidence of Carpal Tunnel Syndrome After the Diagnosis of Ulnar Neuropathy. Journal of Hand Surgery Global Online. 2026. DOI: 10.1016/j.jhsg.2026.100970

[33] Carpal Tunnel Release in Patients With Diabetes: A 5-Year Follow-Up With Matched Controls. The Journal of Hand Surgery. 2014. DOI: 10.1016/j.jhsa.2014.01.012

[35] Ultrasound and MRI in Carpal Tunnel Syndrome: The Dilemma of Simplifying the Approach to a Complex Disease or Making Complex Assessments of a Simple Problem. The Journal of Hand Surgery. 2012. DOI: 10.1016/j.jhsa.2012.07.041

[36] The long-term follow-up of treatment with corticosteroid injections in patients with carpal tunnel syndrome. When are multiple injections indicated?. Journal of Hand Surgery (European Volume). 2012. DOI: 10.1177/1753193412469580

[37] Campbell S Operative Orthopaedics 4 Volume Set. COMPRESSIVE NEUROPATHIES OF THE HAND, FOREARM, AND ELBOW > EXTENDED OPEN CARPAL TUNNEL RELEASE.

[38] Carpal Tunnel Syndrome Surgery: What You Should Know. Plastic and Reconstructive Surgery - Global Open. 2020. DOI: 10.1097/gox.0000000000002692

[39] Minimally Invasive Ultrasound-Guided Carpal Tunnel Release Improves Long-Term Clinical Outcomes in Carpal Tunnel Syndrome. American Journal of Roentgenology. 2021. DOI: 10.2214/ajr.20.24383

[40] Carpal Tunnel Release by the Agee Endoscopic Technique. Journal of Hand Surgery. 1999. DOI: 10.1054/jhsb.1999.0226

[43] Re: Becker SJE, Makanji HS and Ring D. Changes in treatment plan for carpal tunnel syndrome based on electrodignostic test results. J Hand Surg Eur. 2014, 39: 187–93. Journal of Hand Surgery (European Volume). 2014. DOI: 10.1177/1753193414526674

[45] Carpal Tunnel Syndrome and Distal Radius Fractures. Hand Clinics. 2018. DOI: 10.1016/j.hcl.2017.09.003

[46] Campbell S Operative Orthopaedics 4 Volume Set. COMPRESSIVE NEUROPATHIES OF THE HAND, FOREARM, AND ELBOW > UNRELIEVED OR RECURRENT CARPAL TUNNEL SYNDROME.

[47] Green S Operative Hand Surgery. Median Nerve Compression at the Elbow and Forearm > Expected Outcome After Carpal Tunnel Decompression.

[49] Diagnosing Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2014. DOI: 10.1016/j.jhsa.2014.03.039

[50] Correspondence between clinical presentation and electrophysiological testing for potential carpal tunnel syndrome. Journal of Hand Surgery (European Volume). 2012. DOI: 10.1177/1753193412461860

[51] Incidence of Clinically Diagnosed and Surgically Treated Carpal Tunnel Syndrome in Korea. The Journal of Hand Surgery. 2010. DOI: 10.1016/j.jhsa.2010.05.020

[54] CORR Insights®: Diagnosis of Mild-to-moderate Idiopathic Median Neuropathy at the Carpal Tunnel Based on Signs and Symptoms is Discordant From Diagnosis Based on Electrodiagnostic Studies and Ultrasound. Clinical Orthopaedics & Related Research. 2023. DOI: 10.1097/corr.0000000000002822

[55] Carpal tunnel syndrome caused by an interosseous ganglion of the lunate. Journal of Hand Surgery (European Volume). 2024. DOI: 10.1177/17531934241227809

[56] Carpal tunnel syndrome. BMJ. 2007. DOI: 10.1136/bmj.39282.623553.ad

[61] Intraindividual comparison between open and endoscopic release in bilateral carpal tunnel syndrome: a meta‐analysis of randomized controlled trials. Brain and Behavior. 2016. DOI: 10.1002/brb3.439

[62] Management of Recalcitrant Carpal Tunnel Syndrome. Journal of the American Academy of Orthopaedic Surgeons. 2019. DOI: 10.5435/jaaos-d-18-00004

[64] Is surgical intervention more effective than non-surgical treatment for carpal tunnel syndrome? a systematic review. Journal of Orthopaedic Surgery and Research. 2011. DOI: 10.1186/1749-799x-6-17

[65] Efficacy of Combined Ultrasound-Guided Steroid Injection and Splinting in Patients With Carpal Tunnel Syndrome. Archives of Physical Medicine and Rehabilitation. 2017. DOI: 10.1016/j.apmr.2017.01.018

[66] Cross-Sectional Area of the Median Nerve as a Prognostic Indicator in Carpal Tunnel Syndrome Treated With Local Steroid Injection. The Journal of Hand Surgery. 2023. DOI: 10.1016/j.jhsa.2021.09.022

[67] Outcomes of endoscopic surgery compared with open surgery for carpal tunnel syndrome among employed patients: randomised controlled trial. BMJ. 2006. DOI: 10.1136/bmj.38863.632789.1f

[68] Diagnosis of Carpal Tunnel Syndrome. 2009.

[69] High Division of the Median Nerve with Unusually High Origin of the 3rd Space Common Digital Nerve. Injury. 2020. DOI: 10.1016/j.injury.2020.03.024

[75] Grading severity of carpal tunnel syndrome in electrodiagnostic reports: Why grading is recommended. Muscle & Nerve. 2013. DOI: 10.1002/mus.23824

[78] Decompression for recurrent carpal tunnel syndrome provides significant functional improvement and patient satisfaction. Journal of Hand Surgery (European Volume). 2019. DOI: 10.1177/1753193419875945

[79] Magnetic Resonance Imaging to Diagnose Carpal Tunnel Syndrome: When Size Does Matter. Journal of Bone and Joint Surgery. 2026. DOI: 10.2106/jbjs.25.01685

[81] An Alternative Solution for the Diagnosis of Carpal Tunnel Syndrome. The Journal of Bone and Joint Surgery-American Volume. 2015. DOI: 10.2106/jbjs.o.01067

[84] Carpal Tunnel Syndrome: Reconciling “Demand Management” with Clinical Need. Journal of Hand Surgery. 2000. DOI: 10.1054/jhsb.1999.0328

[85] Nonsurgical Treatment of Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2009. DOI: 10.1016/j.jhsa.2009.01.010

[86] Scientific study of the extent of transverse movement of the median nerve at the wrist during active wrist extension in static positions of the upper limb tension test one. Hand Therapy. 2011. DOI: 10.1258/ht.2011.011017

[88] Magnetic Resonance Imaging After Endoscopic Carpal Tunnel Release. The Journal of Hand Surgery. 2013. DOI: 10.1016/j.jhsa.2012.11.013

[90] Diagnostic potential of ultrasound in carpal tunnel syndrome with different etiologies: correlation of sonographic median nerve measures with electrodiagnostic severity. BMC Musculoskeletal Disorders. 2019. DOI: 10.1186/s12891-019-3010-5

[93] THE PATHOPHYSIOLOGY OF CARPAL TUNNEL SYNDROME. Hand Clinics. 1996. DOI: 10.1016/s0749-0712(21)00307-3

[94] Mycobacterium marinum and Carpal Tunnel Syndrome: Three Case Reports. The Journal of Hand Surgery. 2017. DOI: 10.1016/j.jhsa.2017.05.027

[95] Carpal Tunnel Syndrome Due to Hydroxyapatite Crystal Deposition Disease. Journal of Hand and Microsurgery. 2013. DOI: 10.1007/s12593-012-0076-9

[96] Clinical, Radiological, and Electrodiagnostic Diagnosis of Pronator Syndrome Concurrent With Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2020. DOI: 10.1016/j.jhsa.2020.06.006

[97] LONG-TERM FOLLOW-UP OF DUAL-PORTAL ENDOSCOPIC RELEASE OF THE TRANSVERSE LIGAMENT IN CARPAL TUNNEL SYNDROME. Neurosurgery. 2009. DOI: 10.1227/01.neu.0000335784.90217.9d

[98] Diagnosing Systemic Amyloidosis Presenting as Carpal Tunnel Syndrome. Journal of Bone and Joint Surgery. 2021. DOI: 10.2106/jbjs.20.02093

[99] Carpal Tunnel Syndrome Secondary to Ganglion Cyst in a Child. Journal of Child Neurology. 2011. DOI: 10.1177/0883073810387299

[100] The Reversed Palmaris Longus: Sonographic Findings and Anatomical Correlation With Implications for Carpal Tunnel Syndrome Diagnosis and Management. Journal of Hand Surgery Global Online. 2026. DOI: 10.1016/j.jhsg.2025.100903

[102] Differential onset patterns and causes of carpal tunnel syndrome after distal radius fracture: a retrospective study of 105 wrists. Journal of Orthopaedic Science. 2010. DOI: 10.1007/s00776-010-1496-7

[104] Green S Operative Hand Surgery. Median Nerve Compression at the Elbow and Forearm > COMPRESSION OF THE MEDIAN NERVE > Median Nerve Compression at the Wrist: Carpal Tunnel Syndrome.

[105] Carpal Tunnel Syndrome Caused by Space Occupying Lesions. Yonsei Medical Journal. 2009. DOI: 10.3349/ymj.2009.50.2.257

[107] High wrist ratio is a risk factor for carpal tunnel syndrome. Clinical Anatomy. 2018. DOI: 10.1002/ca.23198

[108] MRI Assessment of Median Nerve Size in Patients with Proximate Electrodiagnostic Studies. Journal of Bone and Joint Surgery. 2026. DOI: 10.2106/jbjs.25.00787

[110] Unusual causes of carpal tunnel syndrome: space occupying lesions. Journal of Hand Surgery (European Volume). 2011. DOI: 10.1177/1753193411414352

[117] Differences in risk factors for neurophysiologically confirmed carpal tunnel syndrome and illness with similar symptoms but normal median nerve function: a case–control study. BMC Musculoskeletal Disorders. 2013. DOI: 10.1186/1471-2474-14-240

[119] Position of the wrist associated with the lowest carpal-tunnel pressure. The Journal of Bone & Joint Surgery. 1995. DOI: 10.2106/00004623-199511000-00008

[123] Variability of Precision Pinch Movements Caused by Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2008. DOI: 10.1016/j.jhsa.2008.02.030

[124] The Quality and Strength of Evidence for Etiology: Example of Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2008. DOI: 10.1016/j.jhsa.2008.01.004

[126] Reduced Longitudinal Excursion of the Median Nerve in Carpal Tunnel Syndrome. Archives of Physical Medicine and Rehabilitation. 2007. DOI: 10.1016/j.apmr.2007.02.015

[128] Reliability and Validation of the Greek Version of the Boston Carpal Tunnel Questionnaire. HAND. 2017. DOI: 10.1177/1558944717725379

[129] Green S Operative Hand Surgery. Median Nerve Compression at the Elbow and Forearm > AUTHORS’ PREFERRED METHOD OF TREATMENT: OPEN CARPAL TUNNEL RELEASE.

[130] Pre-operative electrodiagnostic testing predicts time to resolution of symptoms after carpal tunnel release. Journal of Hand Surgery (European Volume). 2015. DOI: 10.1177/1753193415576248

[133] Predicting Clinical Outcome After Surgical Treatment in Patients With Carpal Tunnel Syndrome. The Journal of Hand Surgery. 2018. DOI: 10.1016/j.jhsa.2018.05.017

[135] REOPERATION FOR CARPAL TUNNEL SYNDROME. Hand Clinics. 1996. DOI: 10.1016/s0749-0712(21)00315-2

[136] Topographical Assessment of Symptom Resolution Following Open Carpal Tunnel Release. The Journal of Hand Surgery. 2009. DOI: 10.1016/j.jhsa.2009.04.024

AfiliaçõesO que isso significa? →