Modified medial displacement and valgus osteotomy for unstable intertrochanteric fractures.

We have described previously a modification of the medial displacement and valgus osteotomy of Dimon and Hughston to manage non-unions of intertrochanteric fractures. In this study, we have used the same modification to manage fresh, unstable intertrochanteric fractures. Eighty-seven patients underwent this procedure. Four died within 4 months. The remaining 83 patients were evaluated over a period ranging from 4 to 49 months. There was a low complication rate with this method. They included one perforation of the femoral head, one post operative infection that recurred as a deep infection, one partial superior migration of the implant, one varus fixation with noticeable shortening and two cases where the trochanteric wire had snapped. In the others, the hip movement, abductor function, functional recovery and rate of union (8-12 weeks) were good. The method permits early weight-bearing and avoids some of the problems seen with anatomical fixation of unstable fractures using the sliding screw plate. We feel that medial displacement and valgus osteotomy with an angled blade plate has a definite role in the treatment of unstable intertrochanteric fractures in some situations.