Abstract Summary
Following anterior cruciate ligament (ACL) injury, altered joint kinematics and moments are often reported, even after long rehabilitation programs, which may lead to increased risk of re-injury. Single leg hop task minimizes the assistance from the contralateral side. The aim of the study was to compare knee joint angles and moments of the ACLR knee with the contralateral limb and with uninjured individuals during single leg hopping. Results indicated greater hip flexion and less knee flexion compared to the contralateral side during loading and landing respectively, along with lower knee flexion moments on the injured side compared to the contralateral side and the control group Side 1 on landing. A wide range of individual asymmetries were shown, highlighting that individualized decision making is required in terms of rehabilitation and for returning to sports and activity.
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