Isolated dorsal radiocarpal dislocation: case report and literature review.

A 35-year-old woman sustained an injury to her right wrist that caused a dorsal radiocarpal dislocation with an avulsion fracture of the ulnar styloid process without radial fracture, but with a dorsiflexed intercalated segment instability (DISI) pattern of the carpus. Treatment consisted of debridement, exploration of the wound, closed reduction of the dislocation, and immobilization for 4 weeks. Six months later, she had recovered satisfactorily. Eighteen months after the injury, radiographs of both wrists showed bilateral DISI deformities of the carpus, and it is thought that the DISI pattern of the injured wrist was a congenital abnormality and therefore present before the injury.