In the relief of many types of disability of the hip, realinement of the femur after this bone has been divided at its upper extremity in a variety of ways has been widely and increasingly practiced over more than half a century. The original subtrochanteric osteotomy of Gant became even more appreciated in England and this country through the example of its utilization set by Sir Robert Jones. At this stage of orthopedic development the simple osteotomy was limited to the rigid or presumably rigid hip with which, after division of the bone, the desired attitudinal correction could be obtained simply by realining the limb with the body.
Subsequently have come various technics for performing osteotomy under a movable hip joint, including the bifurcation operation of Lorenz,1 the wedge resections of Pauwels2 and Schanz,3 later made more exactly controllable by Riedel4 and Gaenslen5 through the