Influence of lower limb torque, range of motion, and foot alignment in patellar rotation (Arno angle) in athletes

•Patellar alignment may influence the risk of knee injury in athletes.•Arno angle is a feasible method to measure frontal plane patellar rotation.•Higher hip external rotators torque was associated with lateral patellar rotation.•Other non-local factors were not associated with Arno angle in healthy athletes.