Mallet finger

Case contributed by Mohammad Taghi Niknejad
Diagnosis certain

Presentation

Trauma.

Patient Data

Age: 25 years
Gender: Male
x-ray

Tiny avulsion fracture of the dorsal aspect of the base of the distal phalanx of the 5th finger.

Case Discussion

A triangular avulsion fragment at the insertion of the common extensor tendon on the dorsal aspect of the distal phalanx at the distal interphalangeal (DIP) joint is compatible with mallet finger.

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