Effect of gait modification on the knee adduction moment and medial knee contact forces

Gait modification provides a promising method for the treatment of medial knee osteoarthritis (OA). Although gait modifications have been identified to lower the knee adduction moment (KAM), the potential effect on the medial contact force (MCF) are unclear. This study aims at evaluating the effect of two gait modifications on the KAM and MCF by a subject-specific musculoskeletal multibody model with a natural knee joint. The KAM showed a distinct decrease under toe-out gait, but similar pattern was not observed in the MCF. And the first MCF peak increased during toe-in gait trial.