Fig. 2From: The biomechanical effect of different posterior tibial slopes on the tibiofemoral joint after posterior-stabilized total knee arthroplastyThe kinematic patterns of the tibiofemoral joint in normal and TKA knees with different PTS during knee flexion. The femoral rotation relative to tibia during knee flexion is described in a; a positive value indicated internal rotation, and a negative value indicates external rotation. The posterior translations of the condyle center and the medial and lateral condyle relative to the tibia during knee flexion are described in b, c, and d, respectively; a positive value indicates anterior translation, and a negative value indicates posterior translationBack to article page