Fig. 1From: Varus-valgus instability in the anterior cruciate ligament-deficient knee: effect of posterior tibial loadThe 6°-of-freedom (DOF) robotic system. The tibial cylindrical molded end was connected to the upper mechanism of 6-axis manipulator (black arrow), while the femoral end was connected to the lower one (white arrow). The white arrow head indicates the universal force/moment sensor (UFS) attached to the upper mechanismBack to article page