Dislocation or Fracture-Dislocation of the Carpometacarpal Joints

Carpometacarpal (CMC) dislocation or fracture-dislocation are uncommon hand injuries. We report four cases treated during the past three years. One patient had dislocation in all four ulnar CMC joints. One in the 4th and the 5th, one in the 4th, and one in the 5th CMC joint. Closed reduction and cast mobilization were performed in one case and closed reduction and percutanous fixation in one. Open reduction and internal fixation were performed in two cases. All cases achieved excellent results. Closed reduction and cast mobilization are thought to be good treatment for some cases with CMC dislocation or fracture-dislocation.