[Dislocation of the scaphoid bone of the hand]

After presentation of the kinematic of the scaphoid and the mechanism of the luxation of the scaphoid, the importance of the correct diagnosis of a wrist instability, after this injury, is demonstrated. After closed reduction a lateral, anteroposterior and a stress-radiography in ulnar-and radialstress has to be done. If the gap between the scaphoid and lunate is widened, a wrist instability exists. Another sign for a wrist instability is a scapholunate angle with more than 70 degrees and a wrong position between radius, scaphoid, lunate and capitate. The problems of conservative treatment are presented and primary repair of a wrist instability with suture of the ruptured ligaments and temporary Kirschner-wire fixation is recommended.