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Mallet Finger: Treatment, Recovery and When to See a Surgeon
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- Mallet Finger: Treatment, Recovery...
You were playing cricket, basketball, or volleyball — the ball hit the tip of your finger at an awkward angle. Now the tip of your finger droops downward and you cannot straighten it no matter how hard you try. This is called a mallet finger.
It is one of the most common finger injuries in sport, and also happens at home — from catching the corner of a drawer or tucking in a bedsheet. Despite how simple it looks, mallet finger needs proper treatment or the deformity can become permanent.
What is mallet finger? Mallet finger occurs when the extensor tendon — the tendon that runs along the back of the finger to straighten the tip — is torn or snapped off the bone. The fingertip, now without its "straightening cable," droops at rest and cannot be actively extended.
The most common mechanism is a forced bend of the fingertip when the finger is held straight — for example, a ball striking the fingertip directly. This sudden bending force is too strong for the tendon to resist, and it either ruptures or pulls off a small piece of bone (called a bony avulsion).
Less commonly, mallet finger can result from a laceration (cut) on the back of the fingertip that severs the extensor tendon
Types of Mallet Finger
| Type | What Happened | Treatment |
|---|---|---|
| Tendon (Type I) | Tendon ruptures without bone injury | Splinting 6–8 weeks |
| Bony Avulsion (Type III) | Tendon pulls off bone fragment | Splinting or surgery depending on size |
| With joint dislocation | Large bone fragment + DIP joint displaced | Usually requires surgery |
How is Mallet Finger Diagnosed?
Diagnosis is clinical — a drooping fingertip that cannot be actively straightened is the classic sign. An X-ray is always taken to check for a bony avulsion. If a large bone fragment is present (more than one-third of the joint surface), surgery may be recommended to prevent joint instability.
Treatment: Splinting (Non-Surgical)
The vast majority of mallet finger injuries are treated non-surgically with a mallet finger splint. The splint holds the fingertip in a straight (or very slightly extended) position, allowing the tendon ends to heal in close proximity.
Duration of splinting: Tendon mallet fingers require 6–8 weeks of full-time splinting. After this, a further 4 weeks of night-time splinting is recommended. Bony mallet fingers may require slightly shorter or longer periods depending on X-ray healing.
Treatment: Surgery
Surgery is recommended when there is a large bony fragment (over 30–40% of joint surface), when the joint is dislocated, or in cases where conservative treatment has failed after adequate splinting.
The procedure involves internal fixation — using a small pin or wire to hold the bone fragment in place while it heals. This is done under local anaesthesia in most cases. The pin is usually removed 4–6 weeks later in the clinic.
Recovery Timeline
| Week | What to Expect |
|---|---|
| Week 1–6 | Full-time splinting. Finger feels stiff. Some swelling is normal. |
| Week 6–10 | Splint removed for supervised exercises. Night splint continues. |
| Week 10–12 | Gradual return to activities. Some residual stiffness is common. |
| 3–6 months | Full recovery. Small loss of terminal extension (5–10°) is acceptable. |
Conclusion
Finger Won't Straighten After an Injury?
Do not delay — mallet finger needs prompt treatment for the best result. Dr. Karn Maheshwari will examine your finger, take an X-ray, and fit the correct splint — usually in one visit.
Frequently Asked Questions
No. Without a splint holding the fingertip straight, the torn tendon ends cannot heal in contact with each other. Untreated mallet finger usually results in a permanent drooping deformity and may lead to a swan-neck deformity over time.
Splinting takes 6–8 weeks full-time, followed by 4 weeks of night splinting. You should expect 3–4 months before full return to sport. The key is strict compliance — any bending during the healing phase extends the treatment period.
No — the majority of mallet fingers are treated successfully with splinting alone. Surgery is only required for large bony fragments, joint dislocation, or failed conservative treatment.
Chronic mallet finger can lead to a “swan-neck deformity” — where the middle joint of the finger hyperextends. This is harder to treat. Surgery (tenolysis or tendon reconstruction) may be needed, and results are less predictable than early splinting. After surgery, read our guide on stiff fingers after surgery for what to expect during rehabilitation.
Light activities are possible with the splint in place. However, contact sports should be avoided for the full splinting period to prevent re-injury. Your surgeon will advise on sport-specific return to play.
