Fig. 2

Kinetics and kinematics of the knee joint in the sagittal and axial planes. The blue curve indicates the ACL-ruptured limb, and the red curve indicates the contralateral uninjured limb. The shaded region represents mean ± one standard deviation. Table 1 presents a statistical analysis of the graph. a Knee extension moment. The knee extension moment peak value and amplitude were both smaller in the ACL-ruptured limb (black arrow). b Knee flexion angle. The ACL-ruptured knee showed extension at the IDS phase (black arrow) and more flexion from the SLS to the TDS phase (red arrow)