Fig. 3
Lateral view of porcine knee joint (medial side). a when varus torque is applied, the interaction between the medial femoral condyle and the medial tibial plateau (black arrow) generates anterior tibial load (white arrow) and the tibia translates in antero-proximal direction (yellow arrow) along the posterior tibial slope, b the tibia can rotate in more varus direction because of the greater antero-proximal translation after removal of the ACL (white dotted line)