ABSTRACT
Loosening of the femoral component after total hip arthroplasty is often associated with loss of proximal femoral bone stock. A variety of techniques have been described for revision of the femoral component in a failed total hip arthroplasty (THA) with severe bone stock deficiency. Cemented [1,2] and cementless [3-5] (Fig. I) methods of fixation have been successful over both intermediate-and long-term follow-up; however, these techniques are not always suitable when there is massive bone stock loss (Fig. 2). The goal of these techniques is to provide a stable and durable reconstruction despite the loss of bone [1-5]. In the most severe cases, allograft-prosthetic composites [6-9] and proximal femoral replacement "megaprostheses" [10-12] offer salvage options but are associated with high rates of severe complication, including dislocation, deep infection, and nonunion of allograft-prosthesis composites.
