Fig. 2

Illustration depicting the Bernard quadrant method used for radiographic measurements. Center point (K) of the center of the femoral tunnel. The other distances include: t, defined as the total sagittal diameter of the lateral condyle measured along Blumensaat’s line; h, the maximum intercondylar notch height, and a, the distance of point K from the most dorsal subchondral contour of the lateral femoral condyle, and b, which is the distance of point K from Blumensaat’s line