The mean muscle fiber orientation with respect to the femoral shaft was 36° (range, 10° to 80°) for the vastus lateralis and 43° (range, 12° to 75°) for the medialis obliquus. Vastus ...

[25] The muscle fiber orientation with respect ... In our examination of the anatomy of the knee extensor mechanism in patients with degenerative joint disease, we found a tendency for valgus ...