Comparison estimate muscle activity and electromyogram on the gait with ankle foot orthosis by a musculoskeletal model

Abstract

We estimated muscle force and activity on gait with various plantar flexion resistive moment Ankle Foot Orthosis (AFO) by musculoskeletal model and AFO model, and performed muscle activity and ankle muscles force. Two healthy subjects were measured in five conditions: without an AFO and with an AFO with four different amount of planter flexion resistive moment. In estimated muscles activity, Tibialis Anterior, Gastrocnemius Medial head, Biceps Femoris, Gluteus maximus were medium to high correlated with experimental muscles activity, and in AFO condition, they were showed similarity value. In estimated muscles force, All AFO condition’s Tibialis Anterior tended to decrease compared with no AFO condition. Gastrocnemius Medial head tended to increase compared with no AFO condition.