SPLIT-STEP VS SIDE-STEP EVASIVE RUNNING MANOEUVRES: WHICH IS MORE PROTECTIVE OF THE ACL?

Abstract

Side-step movements are typically performed by athletes involved in sports that require the player to evade their opponents. However, the combination of internal rotation, valgus and flexion at the knee during side-stepping places high demands on the ACL such that these movements have been associated with a high incidence of ACL injury (Ebstrup & Bojsen-Moller, 2000). An alternative technique to the side-step is the split-step. Traditionally used in court sports, the split-step is characterised by a more symmetrical approach to the cut movement relative to the side-step and, due to the more even distribution of the ground reaction forces across two lower limbs, may provide greater protection to the ACL. However, as there has been no systematic comparison of the side-step versus the split-step technique, this study aimed to characterise differences in lower limb biomechanics during unplanned side-step and split-step movements, with implications for ACL injury prevention.