Closed complex dorsal dislocation of the middle finger metacarpophalangeal joint: anatomic considerations and treatment.

A rare complex isolated metacarpophalangeal joint dislocation of the middle finger is described, and the pathology is reviewed. The dorsal longitudinal incision used in this case provided excellent exposure for the reduction and helped avoid injury to the digital nerves on the palmar side of the injury. Early mobilization with extension blocking is advocated to maximize joint range of motion postoperatively.