1984 年 32 巻 3 号 p. 705-706
We reported a case with epiphyseal separation of the distal ulna which could not be reduced by nonsurgical manipulation due to interposition of the ext. carpi ulnaris tendon. The case was a 13-year-old boy who injured by falling clown from a running motorbike. X-ray findings showed markedly separated distal epiphysis of the bilateral ulna with fracture of the distal radius. In spite of manipulation under anesthesia, the epiphyseal separations were irreducible. Operative findings showed that the ext. carpi ulnaris tendons were interposed between the separated ulnar fragments. Each radius and ulna were fixed by Kirschner wires following surgical reduction.