Fig. 1From: Intraoperative rotational kinematics and its influence on postoperative clinical outcomes differ according to age in Unicompartmental knee ArthroplastyIntraoperative tibial rotation relative to the femur evaluated by the image-free navigation system. This image showed that the tibial antero-posterior axis internally rotated 7.5° relative to the femoral antero-posterior axis at 90° knee flexionBack to article page