Isolated dorsal dislocation of the 5th carpometacarpal joint; a missed injury

Introduction: 5th carpometacarpal (CMC) joint dislocations of the wrist region are very rare and easily overlooked injuries. In this type of injury, which causes serious functional problems in the hand if not treated appropriately, closed methods are generally used in the treatment. In this study, we present a case with fracture-dislocation of the 5th CMC joint. Case: Fracture-dislocation of the 5th CMC joint of a 25-year-old patient who was admitted to the emergency department due to wrist pain was not noticed. The diagnosis was made during the follow-up of the patient, and the joint was reduced with closed method and fixed with a K wire. No serious problems were encountered in the patient's controls. Conclusion: Undiagnosed 5th CMC joint dislocation disrupts the transverse and longitudinal arches of the hand, so the patient has a weak and painful gripping function. Radiological findings may be unclear on anterior-posterior and lateral views, and additional images may be obtained if in doubt.