Education · hand

Mallet Finger Info In-depth Evidence

Reviewed by Dr Kieran Hirpara, Specialist Orthopaedic Surgeon Last reviewed

Also on YouTube.

Video transcript

You might notice your fingertip drooping after a ball strikes the tip of your finger during sport or your fingertip catches on a sheet or sleeve. The most noticeable change is that the tip hangs downward and you cannot straighten it yourself, even though bending it remains perfectly normal. Day to day, this often means struggling to button a shirt, type on a keyboard, or pick up small flat items. Many people delay getting it checked because the discomfort is mild and the finger still handles most tasks. Starting treatment early makes a real difference to how well the finger recovers. The swelling and bruising usually appear over the back of the last joint, while the pain tends to stay quite mild. You will likely find that the finger still works for everyday activities, which is why some patients wait before seeking advice. The most striking sign remains the downward droop of the fingertip that refuses to lift without help. Catching these changes early helps protect the delicate structures inside the tip. A thin band of tissue called the extensor tendon sits along the back of your finger and normally pulls the tip straight. When the injury happens, this tendon either tears near the nail or pulls a small piece of bone away with it. Because the connection is broken, muscle force cannot reach the last joint, leaving the fingertip to hang down. The damaged ends must stay perfectly aligned for several weeks so they can knit back together. Allowing the tip to bend even briefly during this time stretches the healing tissue and can make the droop permanent. Most cases are managed without surgery using a small plastic splint that holds the tip joint completely straight around the clock for six to eight weeks. The splint must never be removed, even for washing, because letting the fingertip bend resets the healing process. Many patients then wear the device only at night for a few extra weeks once the continuous phase finishes. Surgery is sometimes recommended when a large bone fragment has shifted out of place or when the injury breaks the skin. The bone piece may be pinned back into position during the procedure. Even injuries that have been present for more than several weeks are still worth treating, though the recovery tends to be less complete. Once the splinting period ends, the finger often feels quite stiff and may show a slight droop at first. Gentle hand therapy exercises are introduced gradually to help restore normal movement and strength. Most people end up with a finger that functions normally, though a few degrees of permanent droop can sometimes remain. It is best to show the droopy fingertip to a clinician within a few days of the injury so treatment can begin promptly. You should seek same day attention if there is an open wound near the joint, or if you notice numbness, tingling, coldness, or a dusky colour in the finger. Continuing home splinting is fine, but you will need a professional review if the droop has not improved by the end of the recommended period.

Mallet Finger: Causes, Treatment and Recovery

What you're feeling

You will likely notice your fingertip droops and cannot straighten itself. This happens because the tendon that pulls your finger up is torn or detached from the bone. The pain is usually sharp at first, settling into a dull ache around the tip of your finger. You may feel tenderness where the tendon attaches to the bone.

Simple movements become difficult. You might struggle to type on a keyboard or press buttons on a phone. Gripping objects, like holding a cup of tea or turning a doorknob, can feel unstable or painful. Bending the finger at the middle joint while trying to straighten the tip may cause discomfort. You might find it hard to put on gloves or rings.

The pain often flares after activity. Using your hand for repetitive tasks, such as washing dishes or gardening, can make the ache worse. You may notice stiffness when you first wake up in the morning. This stiffness usually eases as you move your hand gently. However, forcing the finger straight can increase the pain and swelling.

If the injury involves a fracture, you might see swelling or bruising at the tip of the finger. In some cases, the joint may look slightly misaligned. This is called subluxation. It happens when the bone shifts out of place. Not everyone with a fracture experiences this. About half of patients with larger fractures do not develop this joint shift.

Your symptoms may persist if you do not seek care quickly. Delayed treatment can lead to long-term stiffness or weakness. However, even if you present a few weeks after the injury, conservative treatment with a splint can still be effective. Most people manage their symptoms well without surgery. We aim to help you regain full function through simple, non-surgical methods whenever possible.

What's actually happening

Your fingertip rests in a bent position because the tiny cord that straightens it has snapped. This cord, called the terminal tendon, acts like a rope pulling your nail upward. When it tears or pulls away from the bone, that upward pull stops. Without this tension, the joint cannot lift against gravity.

The injury usually happens when something catches your straight finger and forces it down suddenly. This might be a ball or a door handle. The force is so strong that the tendon gives way. In some cases, the tendon pulls off a small chip of bone from the end of your finger. Whether the break is in the soft tissue or the bone, the result looks the same: your joint droops and stays bent.

You can still move your finger with help, but you cannot lift it yourself. This is because the muscle that bends your finger works without opposition. It pulls the joint down while the straightening mechanism is broken. If the break involves a large piece of bone, the joint may shift out of place. This misalignment can lead to long-term stiffness if not managed correctly.

Most of these injuries heal well with simple splinting. We keep the joint straight for twelve weeks to let the tendon or bone heal back into place. This allows the rope to reattach firmly. If the bone fragment is very large or the joint is misaligned, we may discuss surgery. However, many cases resolve without an operation. The goal is to restore your ability to straighten the finger fully and comfortably.

What we can do about it

Dr Kieran Hirpara, an upper-limb surgeon at Mater Private Hospital Rockhampton, starts with the least invasive options that suit your condition. We begin by assessing your injury to determine if simple splinting is enough. Most cases of mallet finger respond well to conservative care. You will wear a splint that holds the tip of your finger straight. This keeps the tendon in place so it can heal. You can try this at home or with guidance from a hand therapist. A hand therapist can treat this injury as effectively as a surgeon. They use methods that protect your skin and optimise your recovery. You may also wear a splint at night, though this does not always improve the final result. We aim for you to regain full movement without surgery.

Patients are generally referred to our clinic by their GP; if a physiotherapist has suggested you see us, you will still need a referral from your GP in order to be eligible for the Medicare rebate. A clinic assessment establishes the diagnosis. For acute injuries, we usually try non-operative care first. This includes activity change, splinting, and therapy. We may recommend pain medication or anti-inflammatories to manage discomfort. These help you stay comfortable while the tendon heals. In some cases, we might consider injections, but these are not always necessary for mallet finger. The goal is to reduce pain and swelling so you can function normally. We monitor your progress closely. If you are unable to work with the splint in place, or if the injury is neglected for several weeks, we may adjust the plan. Most authorities recommend splinting only the distal joint. This keeps the rest of your finger mobile.

Surgery is considered when conservative care has not worked or when the injury is complex. We may recommend an operation if you have a fracture involving more than one-third of the joint surface. Surgery is also indicated if the bone has slipped out of place (volar subluxation). In these cases, the tendon may have pulled a piece of bone away. The operation repairs the tendon and stabilises the joint. We use a small incision to access the area. The tendon is reattached to the bone. A thin wire may hold the joint straight while it heals. This wire is removed after four to six weeks. You will wear a splint for about eight weeks after surgery. Normal activities are resumed gradually. We discuss all options with you to ensure the plan matches your specific injury and lifestyle needs.

What to expect

Most mallet finger injuries settle well with simple splinting. This non-surgical approach is the standard for the majority of cases. You will wear a splint to keep the tip of your finger straight. This allows the tendon to heal. If managed correctly, few patients have significant persistent disability after two weeks of treatment.

Surgery is not always needed. It is typically reserved for specific situations, such as when a large piece of bone is involved or if the joint surface is significantly damaged. Even in these more complex cases, surgical outcomes are generally good. Some studies report no complications like infection or nail deformity with modern techniques. However, operative treatment does carry a higher risk of issues, with one study noting a 41% complication rate. This is often due to the delicate nature of the tendon and blood supply in this area.

If you choose conservative management, the outlook remains positive. Large bone fragments and neglected injuries often heal with low long-term complication rates. You should avoid supplemental night splinting, as evidence shows it does not improve your final result in terms of movement or satisfaction.

For chronic injuries that do not heal, reconstruction is an option. The Fowler procedure is considered a safe and effective way to correct the deformity with less impact on your other joints.

Overall, whether you have surgery or just splinting, excellent clinical outcomes are common. The key is early recognition and proper care. Delayed treatment can still yield adequate results, but early referral to a hand specialist helps avoid long-term stiffness or weakness. Your finger may feel stiff at first, but function usually returns well with patience and consistent splint wear.

When to see someone

See your GP if you have persistent pain, weakness, or instability that does not improve with rest. Ask for a specialist review if your finger locks, gives way, or interferes with sleep or work. Early recognition of mallet finger injuries and referrals to a hand surgeon are crucial to avoid long-term disability. This is especially important if you play sports like football, where these injuries are frequent. Sudden worsening of symptoms warrants prompt attention. While many cases respond well to splinting, those that do not react to this therapy may need surgical intervention. Timely care helps prevent joint subluxation and ensures the best possible recovery for your finger.

Advanced reading: the deeper science (optional)

This section goes further than you need for your own treatment decisions. Mallet finger is worth the extra reading because the two situations that are usually treated as clear indications for surgery — a large fracture fragment, and a persistent droop after splinting — are less clearly established than the confidence with which they are stated.

Both treatments produce good results, and nobody knows where the line is

A systematic review of surgical and non-surgical management reached a conclusion that is unusually direct: both lead to good clinical outcomes, and insufficient evidence is available to determine when surgical intervention is indicated [1].

That second half is the important one. The dispute is not about whether either treatment works. It is that the threshold for choosing surgery — the point at which the fracture is judged too large, or the joint too subluxed — rests on convention rather than on comparative evidence.

Where a fragment involves more than a third of the joint surface, or the distal phalanx has subluxed, surgery is generally indicated — but a significant advantage of surgical management, even in those complicated cases, has yet to be clearly proven [2].

Splinting works, and the number that matters is how long

The orthotic evidence is more concrete. Two of three studies found a large effect size for orthotic intervention, ranging from 2.17 to 12.12, with a recommended immobilisation duration of 6 to 8 weeks, and additional weeks where a lag persists [3].

Two practical points follow. The first is that the splint must hold the fingertip straight continuously — the tendon ends are held apposed by position alone, and a few minutes of flexion while washing restarts the clock. The second is that "additional weeks where a lag persists" is part of the protocol, not a sign of failure.

Why a residual droop is often acceptable

A small permanent extension lag after treatment is common, and it is usually compatible with normal hand use. The distal joint contributes relatively little to grip, and most people adapt to a few degrees of droop without noticing it functionally.

That matters when weighing surgery for an imperfect result, because operating on this joint is not without cost: the fragment is small, the skin is thin, and pin or wire fixation of a joint this size carries risks of infection, nail deformity and joint stiffness that must be set against a cosmetic-to-mild functional gain. Given the reviews above cannot demonstrate an advantage for surgery even in the complicated cases, accepting a modest lag is an evidence-consistent choice rather than a compromise.

The deformity that is not a mallet finger

Mallet finger is one of a family of closed extensor mechanism injuries, distinguished mainly by where along the tendon the failure occurs — mallet at the fingertip, boutonnière at the middle joint, and sagittal band injury at the knuckle [4]. They are frequently confused with one another early, when swelling obscures the pattern, and each has a different splinting position. Splinting a boutonnière as though it were a mallet holds the wrong joint, which is why the diagnosis is worth confirming before six weeks of immobilisation are committed to.


References for the advanced reading
  1. Lin JS, Samora JB. Surgical and nonsurgical management of mallet finger: a systematic review. J Hand Surg Am. 2018;43(2):146-163.e2.
  2. Lamaris GA, Matthew MK. The diagnosis and management of mallet finger injuries. Hand (N Y). 2016;12(3):223-8.
  3. Valdes K, Naughton N, Algar L. Conservative treatment of mallet finger: a systematic review. J Hand Ther. 2015;28(3):237-46.
  4. Lin JD, Strauch RJ. Closed soft tissue extensor mechanism injuries (mallet, boutonniere, and sagittal band). J Hand Surg Am. 2014;39(5):1005-11.
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

  • Absolute indications for surgical intervention for mallet fingers in pediatric populations remain unclear [1].
  • Delayed surgical management of bony mallet fingers demonstrated adequate functional outcomes with minimal complications compared with prior literature [2].
  • Both surgical and nonsurgical treatments of mallet finger injuries lead to excellent clinical outcomes [3].
  • Most authorities splint only the distal joint for mallet finger deformities [4].
  • Complication rates for large-fragment mallet finger cases are low, suggesting they can be effectively managed conservatively [5].
  • Most mallet finger injuries can be managed non-surgically with splinting, although surgery is occasionally recommended for acute or chronic cases or for salvage of failed prior treatment [6].
  • The role of surgery for mallet fractures of the thumb remains unclear due to their uncommon nature and favorable radiographic findings [7].
  • After a mallet-finger injury treated within two weeks by either splinting method, few patients have significant persistent disability [8].
  • Some authors propose treating all cases of mallet finger with a dorsal glued splint except for stage IV mallet finger, which is treated with extra-articular pinning [9].
  • The conservative treatment of mallet finger with a simple splint is recommended as an alternative means of treatment [14].
  • There was insufficient evidence from comparisons tested within randomised controlled trials to establish the relative effectiveness of different, either custom-made or off-the-shelf, finger splints used for treating mallet finger injury [15].
  • Surgery is generally indicated in the case of mallet fractures involving more than one-third of the articular surface as well as in all patients who develop volar subluxation of the distal phalanx [16].
  • A significant advantage of surgical management even in complicated cases (fractures >1/3 articular surface or volar subluxation) has yet to be clearly proven [16].

Anatomy & Pathophysiology

  • The mallet finger deformity is characterized by a loss of active distal interphalangeal (DIP) joint extension with full passive range of motion evident [18].
  • The deformity reflects the loss of normal extensor force transmission via the terminal tendon insertion onto the distal phalanx [18].
  • The unopposed flexor digitorum profundus pulls the distal joint into flexion [18].
  • The usual mechanism of injury involves sudden passive flexion of an actively extended DIP joint [18].
  • Disruption of the terminal tendon may be entirely confined to the tendon or may involve an avulsed fracture fragment from the dorsal lip of the distal phalanx proximal articular surface [18].
  • The clinical appearance of soft tissue and bony mallet fingers is similar because the avulsed fragment includes the terminal tendon insertion [18].
  • The distal joint rests in flexion, a posture that cannot be actively changed [18].
  • Full passive extension of the DIP joint is possible [18].
  • Mallet finger most commonly involves a closed rupture of the terminal tendon with or without associated fracture of the distal phalanx [34].
  • Snagging the extending finger on an object that suddenly flexes the DIP joint is a frequent cause of injury [34].
  • Less commonly, a forceful hyperextension injury of the DIP joint may result in a large fracture of the base of the distal phalanx involving one-third or more of the articular surface [34].
  • Elderly patients with osteoarthritis of the DIP joint may have mallet deformities that are not related to trauma [34].
  • Individuals with hyperlax joints may have multiple pseudomallet swan neck postures that are unrelated to trauma [34].
  • Open mallet injuries are uncommon [34].
  • The most frequently involved digits are the small, ring, and middle fingers of the dominant hand [34].
  • There is a male predominance in mallet finger incidence [34].
  • Tendinous mallet fingers have been reported to occur from age 11 onward [34].
  • In skeletally immature individuals, a transepiphyseal plate fracture may be seen [34].
  • There may be a familial predisposition to mallet fingers [34].
  • The terminal tendon is the primary structure responsible for extending the DIP joint [46].
  • Adjacent retinacular structures provide stability to the DIP joint [46].
  • Palmar subluxation of a DIP joint without preexisting arthritic deformity is expected when more than one half of the dorsal articular surface is injured [47].
  • A mallet finger caused by avulsion of the extensor tendon from the distal phalanx can be satisfactorily treated by splinting 12 weeks after injury [13].
  • Prolonged splinting and splinting longer than 12 weeks may be successful, though the duration may be limited by the patient’s tolerance [13].
  • After 12 weeks, if the distal phalanx droops severely but passive extension in the DIP joint is still satisfactory, surgery may be indicated depending on patient needs [13].
  • Displacement of the epiphysis of the distal phalanx can cause the digit to assume a mallet finger posture [13].
  • Hyperextension of the phalanx usually affords satisfactory reduction of a displaced epiphysis [13].

Classification

  • Most mallet finger injuries can be managed non-surgically with splinting [6].
  • Surgery is occasionally recommended for acute or chronic cases of mallet finger [6].
  • Surgery is occasionally recommended for salvage of failed prior treatment of mallet finger [6].
  • The authors propose to treat all cases of mallet finger with a dorsal glued splint except for stage IV mallet finger [9].
  • Stage IV mallet finger is treated with extra-articular pinning [9].
  • A modification to the Doyle classification is proposed to make it more encompassing and less prone to interobserver error [31].
  • The interrater reliability of the Kellgren & Lawrence classification system for post-traumatic osteoarthritis in the distal interphalangeal joint after mallet finger fractures is considerably lower than initially assumed [36].
  • The interrater reliability of the OARSI classification system for post-traumatic osteoarthritis in the distal interphalangeal joint after mallet finger fractures is considerably lower than initially assumed [36].
  • The modified Mallet classification demonstrated strong to excellent agreement and interrater reliability across face-to-face, live tele-assessment, and video-based conditions [37].
  • The modified Mallet classification is appropriate for remote medical follow-up [37].
  • Non-operative management of mallet fractures is safe regardless of fracture classification [38].
  • Non-operative management of mallet fractures is safe regardless of joint congruence [38].
  • Non-operative management of mallet fractures is safe regardless of pre-existing degenerate change in the DIP joint [38].

Clinical Presentation

  • Mallet finger injuries are frequent in football [19].
  • Mallet deformity accounts for a minority of sporting injuries [28].
  • Bilateral mallet fingers raise questions regarding the possible role of biochemical abnormalities in causing the condition [20].
  • Approximately 50% of patients with a mallet fracture involving more than one-third of the articular surface of the distal phalanx do not progress to subluxation of the distal interphalangeal (DIP) joint [21].
  • Fracture size is an independent risk factor for the development of DIP joint subluxation in mallet fracture [21].
  • Time to application of a finger immobilizer is an independent risk factor for the development of DIP joint subluxation in mallet fracture [21].
  • Conservative management of tendinous mallet finger injuries neglected for 2 to 4 weeks can be treated as well as those presenting within the first 2 weeks of injury, with low long-term complication rates [12].
  • Surgery is occasionally recommended for acute or chronic cases of mallet finger or for salvage of failed prior treatment [6].
  • Uncomplicated cases of mallet injuries are best treated by splinting therapy [29].
  • Cases that do not react to splinting therapy are best treated by surgical interventions [29].
  • The authors propose to treat all cases of mallet finger with a dorsal glued splint except for stage IV mallet finger, which is treated with extra-articular pinning [9].
  • Early recognition of mallet finger injuries and referrals to a hand surgeon are crucial to avoid long-term disability [11].

Investigations

  • Most authorities recommend splinting only the distal joint for mallet finger deformities [4].
  • A radiograph should be obtained to determine whether a fracture is present [18].
  • Radiographs should be evaluated to assess if the dorsal fragment is large and whether the distal phalanx is subluxed palmarward [18].
  • Approximately 50% of patients with a mallet fracture involving more than one-third of the articular surface of the distal phalanx do not progress to subluxation of the DIP joint [21].
  • Fracture size and time to application of finger immobilizer are independent risk factors for the development of DIP joint subluxation in mallet fracture [21].
  • Surgery is generally indicated in cases of mallet fractures involving more than one-third of the articular surface [16].
  • Surgery is generally indicated in all patients who develop volar subluxation of the distal phalanx [16].
  • The advantage of surgical management for complicated cases (large fractures or subluxation) has yet to be clearly proven [16].

Treatment

Non-Operative Management

  • Surgery is occasionally recommended for acute or chronic cases or for salvage of failed prior treatment [6].
  • Conservative management of tendinous mallet finger injuries neglected for 2 to 4 weeks can be treated as well as those presenting within the first 2 weeks, with low long-term complication rates [12].
  • A simple splint is recommended as an alternative means of treating mallet finger [14].
  • There was insufficient evidence from randomized controlled trials to establish the relative effectiveness of different custom-made or off-the-shelf finger splints for treating mallet finger injury [15].
  • Supplemental night splinting does not improve outcomes in terms of extensor lag, disability, or satisfaction with treatment [22].
  • A hand therapist can treat type 1 mallet finger injuries as effectively as a surgeon [24].
  • A hand therapist can treat type 1 mallet finger injuries as effectively as a surgeon, using an immobilization method that offers practically no complications regarding skin condition [32].
  • Hand therapists implement a diverse range of clinical skills to optimize outcome success [23].
  • The clinical efficacy of elastic taping for the treatment of mallet finger injuries remains to be tested vigorously [27].

Operative Management

  • A significant advantage of surgical management over conservative management in complicated cases (fracture >1/3 articular surface or volar subluxation) has yet to be clearly proven [16].
  • Surgical management may be considered for acute and chronic mallet lesions in patients who have failed nonsurgical treatment [30].
  • Surgical management may be considered for acute and chronic mallet lesions in patients unable to work with the splint in position [30].
  • Surgical management may be considered for acute and chronic mallet lesions in patients with a fracture involving more than one third of the joint surface [30].
  • A deepithelialised pedicled skin flap technique is a new reliable alternative in the treatment of chronic mallet finger [25].
  • Scar overlapping suture for treating chronic tendinous mallet finger in children is safe and effective [33].

Surgical Technique Details

  • A mallet finger caused by avulsion of the extensor tendon from the distal phalanx can be satisfactorily treated by splinting 12 weeks after injury, as described for an acute injury [13].
  • Prolonged splinting and splinting longer than 12 weeks may be successful, though duration may be limited by patient tolerance [13].
  • After 12 weeks, if the distal phalanx droops severely but passive extension in the distal interphalangeal joint is still satisfactory, surgery may be indicated depending on patient needs [13].
  • For surgical repair of chronic mallet finger, make a small V-shaped or U-shaped incision, convex distally, with the tip no closer than 5 mm proximal to the nail base on the dorsum of the finger [13].
  • Avoid injury to the germinal matrix of the nail during incision for chronic mallet finger repair [13].
  • Develop the flap gently in the plane between the tendon and subcutaneous fat, elevating proximally to expose the extensor tendon with intervening scar [13].
  • Attempt to identify the junction of normal tendon with scar and sever the tendon transversely proximal to the joint, leaving the insertion of the tendon into bone [13].
  • Resect sufficient scar or tendon to allow closure of the gap with the finger in maximal extension [13].
  • Support and protect the repair by immobilizing the joint with a transarticular 0.045-inch Kirschner wire [13].
  • Repair the extensor tendon with 4-0 monofilament nylon or 4-0 monofilament wire as a pull-out roll stitch [13].
  • No additional sutures are required for the tendon repair in chronic mallet finger surgery [13].
  • Close the skin with interrupted 5-0 nylon or use 4-0 nylon as a dermotondermal suture [13].
  • Maintain the finger in extension and apply a compressive dressing post-operatively [13].
  • Support the finger with a volar splint for post-operative comfort and to avoid reinjury in the recovery period [13].
  • Sutures are removed at 10 to 14 days post-operatively [13].
  • The distal joint is maintained in extension, with the Kirschner wire protected by a small metal splint, for 4 weeks post-operatively [13].
  • The Kirschner wire is removed after 4 to 6 weeks post-operatively [13].
  • The repair is protected with a splint for 8 weeks post-operatively [13].
  • Normal activities are progressively resumed after the post-operative protocol [13].

Complications

  • Delayed surgical management of bony mallet fingers demonstrated minimal complications [2].
  • Conservative management of neglected tendinous mallet finger injuries (2 to 4 weeks) is associated with low long-term complication rates [12].
  • Large-fragment mallet finger cases managed conservatively have low complication rates [5].
  • Surgical treatment of acute combined tendon and bone (double level) mallet finger injuries reported no complications such as infection, nonunion, or nail deformity [17].
  • The complication rate after operative treatment of mallet fracture was 41% [41].
  • The high complication rate in operative treatment of mallet fracture is likely attributable to anatomical factors such as thin extensor tendon and poor blood supply [41].

Recovery

  • Delayed surgical management of bony mallet fingers demonstrates adequate functional outcomes with minimal complications compared with prior literature [2].
  • Large-fragment mallet finger cases can be effectively managed conservatively with low complication rates [5].
  • All cases of mallet finger are proposed to be treated with a dorsal glued splint except for stage IV mallet finger, which is treated with extra-articular pinning [9].
  • Early recognition of tendon rupture injuries and referrals to a hand surgeon are crucial to avoid long-term disability [11].
  • Surgical treatment of acute combined tendon and bone (double level) mallet finger injuries using pullout wire fixation with distal interphalangeal joint Kirschner wire stabilization reports good to excellent long-term results with no reported complications such as infection, nonunion, or nail deformity [17].
  • Mallet finger injuries are frequent in football and difficult to treat during the competitive season, often requiring delayed treatment or internal splinting [19].
  • Supplemental night splinting does not improve the outcome of mallet finger in terms of extensor lag, disability, or satisfaction with treatment [22].
  • The Fowler procedure is the safest and most effective reconstructive measure for chronic mallet finger deformity after phalangeal fracture, offering less morbidity than osteotomy or procedures restraining proximal interphalangeal joint extension [44].

Key Evidence

  • [L4] Absolute indications for surgical intervention for mallet fingers in this population remain unclear. [1] (10.1016/j.jhsa.2018.03.037)
  • [L4] Delayed surgical management of bony mallet fingers demonstrated adequate functional outcome with minimal complications when compared with prior literature. [2] (10.1177/1558944719840749)
  • [L4] Both surgical and nonsurgical treatments of mallet finger injuries lead to excellent clinical outcomes. [3] (10.1016/j.jhsa.2017.10.004)
  • [L5] Today most authorities splint only the distal joint for mallet finger deformities. [4] (10.1016/s0749-0712(21)00059-7)
  • [L4] Complication rates were low, suggesting that large-fragment mallet finger cases can be effectively managed conservatively. [5] (10.1186/s12891-026-09787-w)
  • [L5] Most mallet finger injuries can be managed non-surgically with splinting, although surgery is occasionally recommended for acute or chronic cases or for salvage of failed prior treatment. [6] (10.1007/s11552-014-9609-y)
  • [L3] The role of surgery for mallet fractures of the thumb remains unclear due to their uncommon nature and favorable radiographic findings. [7] (10.1177/1558944716672192)
  • [L1] After a mallet-finger injury treated within two weeks by either method few patients have significant persistent disability. [8] (10.1016/s0072-968x(82)80011-9)
  • [L5] The authors propose to treat all cases of mallet finger with a dorsal glued splint except for stage IV mallet finger, which they treat with extra-articular pinning. [9] (10.5999/aps.2016.43.2.134)
  • [L4] Early recognition of these injuries and referrals to a hand surgeon for treatment are crucial to avoid longterm disability. [11] (10.1016/j.hcl.2012.05.042)
  • [L3] Conservative management of tendinous mallet finger injuries that have been neglected for 2 to 4 weeks can be treated as well as those injuries in patients presenting within the first 2 weeks of injury with low long-term complication rates. [12] (10.1016/j.jhsa.2014.06.140)
  • [L2] The study recommends this splint as an alternative means of treating mallet finger. [14] (10.1136/emj.10.3.244)
  • [L1] There was insufficient evidence from comparisons tested within randomised controlled trials to establish the relative effectiveness of different, either custom-made or off-the-shelf, finger splints used for treating mallet finger injury. [15] (10.1002/14651858.cd004574.pub2)
  • [L4] Although surgery is generally indicated in the case of mallet fractures involving more than one-third of the articular surface as well as in all patients who develop volar subluxation of the distal phalanx, a significant advantage of surgical management even in those complicated cases has yet to be clearly proven. [16] (10.1177/1558944716642763)
  • [L4] The study describes a surgical technique for acute combined tendon and bone mallet fingers and reports good to excellent long-term results with no reported complications such as infection, nonunion, or nail deformity in the series. [17] (10.1016/j.jhsa.2014.11.011)
  • [L5] Mallet finger injuries are frequent in football and difficult to treat during the competitive season, often requiring delayed treatment or internal splinting. [19] (10.1016/j.hcl.2012.05.043)
  • [L4] This case raises a question regarding the possible role of biochemical abnormalities causing mallet fingers. [20] (10.1177/175899830400900103)
  • [L2] Approximately 50% of patients with a mallet fracture involving more than one-third of the articular surface of the distal phalanx do not progress to subluxation of the DIP joint; fracture size and time to application of finger immobilizer are independent risk factors for the development of DIP joint subluxation in mallet fracture. [21] (10.1177/1753193414554556)
  • [L1] Supplemental night splinting does not improve the outcome of mallet finger in terms of extensor lag, disability, or satisfaction with treatment. [22] (10.1007/s11552-013-9600-z)
  • [L4] Hand therapists implement a diverse range of clinical skills to optimise outcome success. [23] (10.1177/1758998316664822)
  • [L4] A hand therapist can treat type 1 mallet finger injuries as effectively as a surgeon. [24] (10.1197/j.jht.2008.04.002)
  • [Paper] This method seems to be a new reliable alternative in the treatment of chronic mallet finger. [25] (10.1016/j.injury.2013.01.013)
  • [L4] The clinical efficacy of the proposed method of elastic taping for the treatment of mallet finger injuries remains to be tested vigorously. [27] (10.1016/j.jht.2014.02.005)
  • [L4] Mallet deformity accounts for a minority of sporting injuries, but excellent functional outcome can be achieved with splintage and avoidance of the causative sport while splinted. [28] (10.1054/jhsb.2000.0484)
  • [L4] Uncomplicated cases of mallet injuries are best treated by splinting therapy; cases that do not react to splinting therapy are best treated by surgical interventions. [29] (10.1097/prs.0b013e3181ef8ec8)
  • [L5] Surgical management may be considered for acute and chronic mallet lesions in patients who have failed nonsurgical treatment, are unable to work with the splint in position, or have a fracture involving more than one third of the joint surface. [30] (10.5435/00124635-200509000-00007)
  • [L4] This article provides a topical review of the contemporary literature concerning acute mallet finger injuries and proposes a modification to the Doyle classification to make it more encompassing and less prone to interobserver error. [31] (10.1016/j.jhsa.2022.10.013)
  • [L4] A hand therapist can treat mallet finger injuries of type 1 as effectively as a surgeon, with a method of immobilisation that offers practically no complications regarding skin condition. [32] (10.1177/175899830501000103)
  • [L4] Scar overlapping suture for treating chronic tendinous mallet finger in children is safe and effective. [33] (10.1186/s13018-019-1106-0)
  • [L4] The interrater reliability of the Kellgren & Lawrence and OARSI classification systems for post-traumatic osteoarthritis in the distal interphalangeal joint after mallet finger fractures is considerably lower than initially assumed. [36] (10.1016/j.jhsa.2024.03.012)
  • [L3] The modified Mallet classification demonstrated strong to excellent agreement and interrater reliability across face-to-face, live tele-assessment, and video-based conditions, suggesting it is appropriate for remote medical follow-up. [37] (10.1177/17531934231196118)
  • [L3] Non-operative management of mallet fractures, regardless of fracture classification, joint congruence or pre-existing degenerate change in the DIP joint, is safe and yields predictably good outcomes in most patients. [38] (10.1177/1753193421992986)
  • [L4] The complication rate after operative treatment of mallet fracture was 41%, likely attributable to anatomical factors such as thin extensor tendon and poor blood supply. [41] (10.1054/jhsb.2000.0440)
  • [Case_report] The Fowler procedure was the safest and most effective reconstructive measure for this chronic mallet finger deformity, offering less morbidity than osteotomy or procedures restraining proximal interphalangeal joint extension. [44] (10.2106/00004623-197759040-00019)
  • [L5] The TT is the primary structure responsible for extending the distal interphalangeal (DIP) joint, while adjacent retinacular structures provide stability. [46] (10.1016/j.jhsa.2004.04.022)
  • [L5] Palmar subluxation of a DIP joint without preexisting arthritic deformity is expected when more than one half of the dorsal articular surface is injured. [47] (10.1016/j.jhsa.2007.09.006)

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