Including jump height when normalizing single hop impact kinetics can change the directionality of findings

Measuring landing kinetics during the single hop test provides valuable injury risk information and is clinically feasible. This study compares landing kinetics during a single hop between females with and without an anterior cruciate ligament reconstruction (ACLR). ACLR patients had shorter hop distances and smaller peak impact force when landing on their surgical limb. However, when normalized to potential energy, patients had larger impact force on their surgical limb, potentially indicating poor energy absorption.