RECEMENTING A FEMORAL COMPONENT INTO A STABLE CEMENT MANTLE USING ULTRASONIC TOOLS

Recementing a femoral prosthesis into a retained cement mantle was don e during revision total hip arthroplasty in 15 patients using ultrason ic tools to reshape the existing cement mantle, Early complications su ch as bone perforation or fracture were avoided, The 2-year followup i n 4 patients revealed no adverse effect on the bone-cement interface a s judged radiographically. One patient had rerevision for instability at 1 year after operation, Indications for this technique include isol ated failure of the cement-prosthesis interface, femoral component fra cture, or isolated acetabular revision in which exposure needs, instab ility, leg length inequality, or femoral-head size dictated change of the femoral component.