Volar dislocation of the proximal interphalangeal joint of the finger: an indication for urgent operative treatment.

Two patients are described with persistent acute volar dislocation of the middle phalanx of a finger. Closed reduction was impossible due to intra-articular interposition of the lateral slip of the extensor mechanism, combined with a tear of a collateral ligament. It is important to recognize these injuries at an early stage and an operative treatment is required.