Isolated Dislocation of Fourth Carpometacarpal Joint: Case Report.

We present a case of dislocation of the fourth carpometacarpal joint without associated fractures. This is the first case to be reported in the literature. Carpal injuries are uncommon; it is even rare for isolated carpometacarpal dislocation to occur without associated fractures. The injury is difficult to diagnose because of the swelling of the hand and may be missed on several occasions. A lateral radiograph of the wrist has been found to be mandatory to its precise diagnosis if suspected. Early recognition and anatomical reduction are essential in achieving good long-term outcomes.