[Hypersupination dislocation of the distal radio-ulnar joint after distal radius fracture].

Following an intraarticular distal radius fracture of the scaphoid, scapholunate dissociation and fracture of the ulnar styloid process without dislocation, the distal radius fracture healed with rotational deformity. In the course of conservative treatment, a dislocation of the distal radioulnar joint in locked hypersupination developed. Due to the locked rotational deformity, standard X-rays were difficult to assess. Only with the help of a CAT-scan, were the authors able to visualize the distal radioulnar joint dislocation and later control the postoperative result.