Dislocation of fifth carpometacarpal joint is an unusual injury. In First case, traumatic dislocation of fifth carpometacarpal joint, fracture of the shaft of fourth metacarpal bone and hamate were present. The diagnosis of dislocation of fifth carpometacarpal joint was missed initially. In second case, there was only dislocation of 5th CMC joint. In these cases, we treated the dislocation of fifth carpometacarpal joint with percutaneous K-wire fixation and short arm splint immobilization.