Postoperative femoral component rotation using posterior condylar referencing is difficult to predict preoperatively in total knee arthroplasty

Femoral rotational alignment is important for good patellar tracking [1], stability [2] and good functional outcome [3] after total knee arthroplasty (TKA). A large positive correlation has been identified between external rotation of the femoral component and the Knee Society Score [3]. A number of studies have shown that internal rotation of the femoral component leads to inferior tibiofemoral kinematics, poorer outcomes, and quadriceps weakness [4 –6]. Femoral surgical trans-epicondylar axis (sTEA), a line connecting the most prominent point of the lateral epicondyle with the lowest point of the medial sulcus, is widely regarded as the gold standard for femoral component rotation [7–10].

Source: The Knee - February 25, 2023 Category: Orthopaedics Authors: Tadashi Tsukeoka, Yoshikazu Tsuneizumi Source Type: research