[Isolated dislocation in the distal radio-ulnar joint].

Anatomy, injury-mechanism and classification will be illustrated with a casuistry of the rate isolated luxation of the ulnar head. Diagnosis is established clinically and with comparative X-rays. In our case the luxation was irresponsible in general anaesthesia and had to be succeeded by open reposition with temporary pin-fixation. Postoperatively a cast up to the upper arm is necessary for six weeks. With the removal of the plaster the wire pins also must be immediately withdrawn, as to evade complications like fatigue-breakage of the implanted material. With adherence to this therapeutic scheme operative treatment is not problematic and - by means of posttraumatic physical therapy - shows a good functional result.