WORK OF MUSCLES RESPONSIBLE FOR THE FUNCTIONING OF THE FOOT IN CONDITIONS OF KNEE JOINT CONTRACTURE

Prolonged walking with knee joint contracture causes changes in the functioning of muscles lower leg and foot. Objective. To study foot conditions using a human model. Methods. The gait analysis was performed OpenSim 4.0 program. modeling based on gait2394 following were studied: m. peroneus brevis, longus, tertius, tibialis posterior, anterium, flexor digitorum hallucis extensor longus. Results. Restriction mobility leads to redistribution muscle strength. In 15° flexion contracture, support toes significant overstrain responsible for leg, toes. particular, brevis longus are quite long, their function is impaired, but required increase strength from 10 400 %, while tertius (short), some phases step, its increased threefold. Among greatest isometric anterior compared which works mainly extension. For flexion/extension significant, sometimes 3–5 times, necessary perform function. Conclusions. Knee change biomechanics entire extremity, namely, an foot, work under such constant tension. Given impact it possible predict course thepathological process, determine groups most affected group needs be corrected before after surgery.