Mallet Finger

Mallet finger, also known as “baseball finger,” is a common injury that occurs when the outermost joint of a finger is bent forcibly and suddenly, causing damage to the extensor tendon that straightens the finger. This injury often happens when an object (like a ball) strikes the tip of a finger or thumb, causing it to bend further than intended.

Key Features of Mallet Finger

1. Injury Mechanism: Typically caused by a direct blow to the fingertip, forcing it into a flexed position.
2. Symptoms:
– Pain and tenderness at the top of the finger.
– Inability to fully straighten the finger without assistance.
– Swelling and redness at the joint.
– Sometimes, there can be a noticeable droop at the fingertip.

3. Diagnosis:
– Clinical examination where the patient is unable to actively extend the distal interphalangeal joint (DIP).
– X-rays might be used to check for any fractures or avulsions (where a piece of bone is pulled off by the tendon).

4. Treatment:
– Non-surgical: Most cases are treated by splinting the affected finger in a straight or slightly hyperextended position for 6-8 weeks. This allows the tendon to heal correctly. It’s crucial to keep the finger straight during this period.
– Surgical: In some cases, especially if there’s a large bone fragment or the joint is misaligned, surgery might be required.

5. Recovery:
– Healing usually takes 6-8 weeks with proper splinting.
– Follow-up care is essential to ensure that the tendon heals correctly and that the finger regains full function.
– Physical therapy might be recommended to restore strength and mobility.

If left untreated or improperly managed, mallet finger can lead to permanent deformity or loss of function in the affected finger.

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