[Isolated trapezium dislocation fracture after a serious traffic accident].

Fractures and luxations in the area of the carpal bones are in comparison with other fractures of the upper and lower extremities comparatively rare. Isolated fractures of luxations of the distal row of the carpal bones, by comparison with those of the proximal row, are still rarer incidents. Because of tight ligamentous unions between the carpal bones on the one hand and between the distal row of the carpal and the metacarpal bones on the other hand, a luxation or fracture is connected with a violent contusion or sprain. In the case of seriously or multiply injured persons the carpal injuries might be failed to be noticed. This may also occur in the case of insufficient auxiliary diagnostic measures. Crush-fractures as well as irreducible luxations should be immobilized by combination of adaptation-osteosynthesis and external fixation. An example is presented of an isolated fracture-dislocation of the trapezium after violent multiple trauma, with healing of the trapezium by adaptation-osteosynthesis and plaster immobilisatioi. The function was recovered after 10 weeks.