The impact of femoral component rotational alignment on condylar lift-off.

The surgical technique and implant design influence femoral condylar lift-off in total knee arthroplasty. With the use of the classic method of bone resection and appropriate soft tissue releases, alignment of the femoral component along the transepicondylar axis will create a symmetric and balanced flexion space. This surgical technique will reduce the incidence of condylar lift-off. If condylar lift-off does occur, it may be beneficial to have a prosthesis that is designed with a conforming frontal articulation. Reducing lift-off with a relatively conforming articulation reduces edge loading and in turn should reduce polyethylene damage.