Figure 1.

Area under the curve for the ensemble average of all participants for sagittal-plane knee-flexion angle during the landing at A, return to activity, and B, >12 months after anterior cruciate ligament reconstruction and for knee-extension moment during the landing at C, return to activity, and D, >12 months after anterior cruciate ligament reconstruction. Sagittal-plane knee flexion is represented in negative values, so the area under the curve is a negative value, as is the slope. Sagittal-plane knee-extension moment is referenced as external knee moments, so the area under the curve is a negative value, as is the slope. Abbreviation: SD, standard deviation.