Simultaneous dislocation of the interphalangeal joint of the thumb and the carpal lunate.

A dislocation of the interphalangeal joint of a thumb was treated without problems. The simultaneous dislocation of the lunate was not diagnosed or treated until the plaster cast was removed. Even in cases with an obvious lesion like a finger joint dislocation it is necessary to investigate all other fingers and the wrist to exclude other lesions and to avoid delay in treatment.