Current Methods for the Evaluation and Surgical Treatment of Periprosthetic Femur Fractures Complicating Hip Arthroplasty.

Abstract

Over the next decade, orthopedic surgeons will encounter an increasing number of periprosthetic fractures of the femur after hip arthroplasty. This rise is directly related to the increasing numbers of primary and revision hip arthroplasties being performed and the aging of the population. The Vancouver classification is the most widely used classification system for periprosthetic fractures of the femur occurring after hip arthroplasty. This classification considers the location of the fracture in relation to the femoral stem, the stability of the femoral stem, and the availability of femoral bone stock for revision. Most Vancouver AG and AL fractures can be treated nonsurgically, the exceptions being fractures associated with osteolysis and clamshell fractures of the lesser trochanter. B and C type fractures usually require operative intervention. Both Vancouver B1 and C types can be treated with fracture fixation alone, as the femoral implant is stable. Vancouver types B2 and B3 require femoral revision as the implant is loose. Distinguishing between types B1 and B2 can be difficult from radiographs alone and may require computed tomography and intraoperative testing.