OPEN reduction for derangement of the pelvic girdle is rarely mentioned in the literature. Noland and Conwell1 resorted to two open reductions in aseries of 185 cases of fracture of the pelvis. They stated that the only reason for surgical intervention is pressure of the fragments on the bladder or the rectum. Their procedure is not described. Leadbetter2 found it necessary to operate in 2 cases out of a total of 78 reported. His indication for operation was overriding, irreducible fragments. In regard to operative technic, he simply stated that an incision is made over the superior ramus which is reduced and fixed. The inferior ramus is disregarded. Wilson3 advocated bringing the fractured rami together and fixing them with silver wire. Kreucher4 concurred with Noland and Conwell's criteria for operation, but reported no operative case. Steele5 has done two open reductions for Malgaigne fracture. He