Fig. 3

Isokinetic torques (mean ± SD) between AR and NAR groups at preoperation, 3 months, 6 months and 12 months after surgery. a, b and c mean peak knee flexion torque, peak knee extension torque and H/Q ration, respectively, at the velocity of 180°/s. d, e and f mean peak knee flexion torque, peak knee extension torque and H/Q ration, respectively, at the velocity of 60°/s. * indicated P < 0.05 between groups. H/Q, hamstring/ quadriceps