Simultaneous dislocation of the metacarpophalangeal and subluxation of the carpometacarpal joints of the thumb in a child.

Double dislocations of joints of the thumb are uncommon injuries. We report an unusual case of simultaneous dislocation of the metacarpophalangeal (MCP) and subluxation of the carpometacarpal (CMC) joints of the thumb in a child to illustrate problems related to their treatment.