Adhesive Capsulitis (Frozen Shoulder) — Non-operative Staged Management & Post-operative Rehabilitation (Capsular Release)

Topic scope: Both (A) non-operative staged management of primary/secondary adhesive capsulitis (freezing -> frozen -> thawing), including physiotherapy, intra-articular steroid and hydrodilatation; and (B) post-operative rehabilitation after arthroscopic capsular release (ACR).

Defining principle of surgical rehab here (the inversion): Unlike virtually every other shoulder operation -- where a repair (cuff, labrum, pec major, instability) must be protected with a sling and ROM is restricted to avoid disrupting healing tissue -- frozen-shoulder release rehab is the OPPOSITE: the goal is to prevent re-formation of the capsular contracture. So the protocol is immediate, aggressive ROM, usually NO sling, passive + active ROM starting the same day or day 1, with stretching to the end of the freshly gained range. Delay or immobilisation is the enemy (re-stiffening), not the protector. This is the single most important point distinguishing this protocol from the others in this audit.

A. NON-OPERATIVE STAGED MANAGEMENT

Natural history / staging (consensus, weak evidence -- descriptive, no RCT)

Frozen shoulder is self-limiting in most but typically lasts 12-18 months across 3 clinical stages (Reeves' classic model; staging boundaries overlap and are not sharply separable in practice -- flagged as weak/consensus evidence; the original Reeves model was a single prospective cohort of 49 patients, not an RCT) [Brigham SOC; Chan 2017; Reeves 1975 via Willmore 2020]:

(Stage durations from Brigham Standard of Care 2010 and Chan 2017: freezing 2-9 mo, frozen 4-12 mo, thawing 6-9 mo.)

Stepped non-operative interventions

1. Education / "supervised neglect" + analgesia -- many resolve with reassurance, activity modification and analgesia alone (Codman; Hsu 2011 review). Weak (cohort/expert).
2. Physiotherapy -- pendulum, PROM/AAROM/AROM, capsular stretching, joint mobilisation (grades I-II early for pain, III-IV later for tissue extensibility), scapular/posture work. Brigham: PT 1-2x/week in early stages (mainly HEP instruction), 2-3x/week in thawing. PT is best supported as an adjunct to mobilisation/injection/distension, not as a stand-alone cure (Itoi 2016 Current Concepts; Kelley/McClure/Leggin JOSPT 2009 guidance). Moderate; intensity/timing debated. Intensity caveat: end-range/high-intensity stretching is appropriate in the frozen/thawing phase but can be counter-productive in the acutely inflamed freezing phase -- match intensity to irritability (Kelley 2009).
3. Intra-articular corticosteroid (glenohumeral) -- superior to placebo and to physiotherapy for short-term (up to 4-12 weeks) pain and function; benefit wanes after ~3 months. Strong for short term (multiple RCTs; Koh 2016 systematic review of 10 RCTs; Cochrane Buchbinder shoulder injection review). BESS pathway: GH steroid recommended for short-term symptom control; long-term (>3 mo) benefit not demonstrated (Rupani/Gwilym BESS 2025). Earlier injection (freezing phase) is the rationale -- steroid targets the inflammatory component.
4. Hydrodilatation (distension arthrography) -- distends/ruptures the contracted capsule with saline +/- steroid +/- LA. A controlled, image-guided alternative to surgery. RCT/meta-analytic evidence is mixed: generally produces a transient functional/ROM gain, with no clear superiority over IA steroid alone in several network meta-analyses (Wu 2017 SR/MA of RCTs; Lin 2018 network MA). Some evidence hydrodilatation + steroid > steroid alone in refractory cases (Lee 2017 RCT). Low rate of needing later surgery after distension arthrogram (Nicholson 2020). Moderate; conflicting.

B. POST-OPERATIVE REHABILITATION (the "immediate aggressive ROM" protocols)

Surgery is reserved for cases recalcitrant to >=3-6 months of adequate non-operative care (Struyf 2024; Mullen 2025).

Arthroscopic capsular release (ACR)

• Controlled, direct-vision release of the contracted capsule (rotator interval, CHL, anterior +/- inferior +/- 360 degree capsulotomy; care re axillary nerve inferiorly). Allows graded release with a low risk of iatrogenic fracture or cuff tear (Kanbe 2018, n=255; Jerosch 2001 360 degree release). Achieves reliable gains in final forward elevation and may shorten recovery (most improved by ~4 months -- McAllister/CORR Insights 2025; Saade 2023 MA favoured ACR for AFE). A gentle, controlled manipulation is often performed as part of the arthroscopic release to confirm the gained range.

Consensus POST-OP phased timeline (applies after arthroscopic capsular release)

The hallmark is immediate motion, no protective sling, same-day/day-1 ROM to hold the range just won in theatre.

Representative published protocol (Kanbe 2018, J Orthop Surg Res, n=255, ACR): "passive, assisted-active and stooping (pendulum) exercises for forward flexion and external rotation commenced 1 day after surgery... after 2 weeks of passive exercise, patients began active exercise to strengthen the rotator cuff and scapular stabilisers... after 4-6 weeks patients returned to normal work without limitation." Many ACR series add an intra-articular steroid + controlled manipulation at the index procedure (Filip Struyf 2024; PMC5137660).

Post-surgical physiotherapy is universally agreed to be essential but is under-standardised -- there is no high-level RCT defining the optimal post-release regimen; protocols are consensus/expert and vary widely (Willmore 2020 Shoulder & Elbow, "Post-surgical physiotherapy in frozen shoulder: a review"). Weak/consensus.

KEY CONTROVERSIES

1. Evidence base for arthroscopic release. ACR gives a controlled, direct-vision release with a low iatrogenic fracture/cuff-tear risk and reliable gains in final elevation. Systematic reviews show consistently acceptable results, though there is no definitive RCT defining the optimal technique (Saade 2023 MA; McAllister 2025). Weak/moderate evidence (large cohorts).
2. Steroid timing. Strong short-term benefit (<12 wk) but no durable >3-month benefit; debate over injecting early (freezing/inflammatory phase) vs reserving for refractory cases (Koh 2016; Rupani/Gwilym BESS 2025; Lin 2018).
3. Aggressive vs gentle physiotherapy. High-intensity end-range stretching helps in the frozen/thawing phases but may worsen pain and prolong the condition if applied to the acutely inflamed freezing phase -- "intensity should match irritability" (Kelley/McClure 2009; Itoi 2016). Post-operatively, by contrast, aggressive immediate ROM is mandatory to prevent re-stiffening.
4. Hydrodilatation worth it? Transient benefit only and not clearly better than IA steroid alone in pooled RCT data (Wu 2017; Lin 2018), though some refractory-case RCT support (Lee 2017) and a low rate of needing later surgery (Nicholson 2020).
5. Does anything change the natural history? No intervention is proven to shorten the overall 12-18 month course in the highest-quality reviews; most accelerate symptom relief rather than alter end-point (Rookmoneea 2010 JBJS Br; Hsu 2011). Strong (negative).

EVIDENCE STRENGTH FLAGS (summary)

• STRONG (RCT / SR-MA): IA corticosteroid short-term benefit (Koh 2016 SR of 10 RCTs; Cochrane); hydrodilatation = transient, not superior to steroid (Wu 2017 SR-MA of RCTs; Lin 2018 network MA).
• MODERATE: end-range/scapular mobilisation (Yang 2012 RCT); ACR clinical outcomes (large cohorts -- Kanbe 2018 n=255; Jerosch 2001).
• WEAK / CONSENSUS ONLY: 3-stage natural-history model & stage durations (Reeves cohort, descriptive); the post-operative rehab protocol itself (no defining RCT; expert/consensus -- Willmore 2020); optimal ACR technique (published series are heterogeneous).

CITATIONS

RAG corpus (180,000+ Orthopaedic articles)

• Guyver P, Bruce D, Rees J. Frozen shoulder -- a stiff problem that requires a flexible approach. Maturitas. 2014.
• Kim J, Gahlot N, Park HB. Frozen shoulder: a narrative review of current treatment concepts and the underlying scientific evidence. Clinics in Shoulder and Elbow. 2025;28(4).
• Hsu JE, Anakwenze OA, Warrender WJ, et al. Current review of adhesive capsulitis. J Shoulder Elbow Surg. 2011;20(3):502-514.
• Koh KH. Corticosteroid injection for adhesive capsulitis in primary care: a systematic review of randomised clinical trials. Singapore Med J. 2016.
• Rupani N, Gwilym SE. British Elbow and Shoulder Society patient care pathway: Frozen shoulder. Shoulder & Elbow. 2025;17(4).
• Sheridan MA, Hannafin JA. Upper Extremity: Emphasis on Frozen Shoulder. Orthop Clin North Am. 2006.
• Chan H, Pua P, How C. Physical therapy in the management of frozen shoulder. Singapore Med J. 2017.
• Willmore EG, Millar NL, van der Windt D. Post-surgical physiotherapy in frozen shoulder: a review. Shoulder & Elbow. 2020;14(4).
• Lamplot JD, Lillegraven O, Brophy RH. Outcomes from conservative treatment of shoulder idiopathic adhesive capsulitis... Orthop J Sports Med. 2018.
• Itoi E, Arce G, Bain GI, et al. Shoulder Stiffness: Current Concepts and Concerns. Arthroscopy. 2016;32(7).
• Kanbe K. Clinical outcome of arthroscopic capsular release for frozen shoulder: essential technical points in 255 patients. J Orthop Surg Res. 2018;13(1). (post-op protocol: day-1 ROM, 4-6 wk RTW)
• Jerosch J. 360 degree arthroscopic capsular release in patients with adhesive capsulitis... Knee Surg Sports Traumatol Arthrosc. 2001;9(3).
• McAllister NB. CORR Insights: Releasing forces in adhesive capsulitis... Clin Orthop Relat Res. 2025.
• Saade F, van Rooij F, Saffarini M, et al. Management of shoulder stiffness following rotator cuff repair: a systematic review and meta-analysis. JSES Rev Rep Tech. 2023.
• Wu W, Chang K, Han D, et al. Effectiveness of glenohumeral joint dilatation for treatment of frozen shoulder: a systematic review and meta-analysis of RCTs. Sci Rep. 2017. (SR-MA of RCTs)
• Lin M, Hsiao M, Tu Y, et al. Comparative efficacy of intra-articular steroid injection and distension... a systematic review and network meta-analysis. Arch Phys Med Rehabil. 2018. (network MA)
• Lee D, Yoon S, Lee MY, et al. Capsule-preserving hydrodilatation with corticosteroid vs corticosteroid alone in refractory adhesive capsulitis: a randomized controlled trial. Arch Phys Med Rehabil. 2017. (RCT)
• Nicholson JA, Slader B, Martindale A, et al. Distension arthrogram in the treatment of adhesive capsulitis has a low rate of repeat intervention. Bone Joint J. 2020;102-B(5).
• Uppal HS. Frozen shoulder: a systematic review of therapeutic options. World J Orthop. 2015.
• Mullen JP, Hauer TM, Lau EN, et al. Adhesive capsulitis of the shoulder. Arthroscopy. 2025;41(7).
• Yang J, Jan M, Chang C, et al. Effectiveness of the end-range mobilization and scapular mobilization approach... a randomized control trial. Manual Therapy. 2012. (RCT)
• Rookmoneea M, et al. The effectiveness of interventions in the management of patients with primary frozen shoulder. J Bone Joint Surg Br. 2010;92-B(9).
• Struyf F. Frozen Shoulder. 2024 (surgical indication & post-op steroid + controlled manipulation).

Published rehab protocols (URLs)

• Brigham & Women's Hospital -- Standard of Care: Shoulder Adhesive Capsulitis (Dept of Rehabilitation Services, 2010): https://www.brighamandwomens.org/assets/BWH/patients-and-families/rehabilitation-services/pdfs/shoulder-adhesive-capsulitis.pdf (source for the 12-18 mo / 3-stage durations, capsular pattern, PT frequency 1-2x/wk early & 2-3x/wk thawing, mobilisation grades, steroid 4-6 wk short-term benefit).
• BESS (British Elbow & Shoulder Society) Frozen Shoulder patient care pathway -- Rupani & Gwilym, Shoulder & Elbow 2025 (GH steroid short-term only, no >3 mo benefit).
• Kanbe 2018 ACR open-access (post-op day-1 ROM protocol): https://pmc.ncbi.nlm.nih.gov/articles/PMC5857121/
• ChoosePT / APTA patient guide to frozen shoulder (lay phased overview): https://www.choosept.com/guide/physical-therapy-guide-frozen-shoulder-adhesive-capsulitis