Biomechanical evaluation of the locomotor system functioning in cases of inveterate lesions of the knee extensor mechanism

Complex biomechanical and electromyographical examination of 10 patients with inveterate lesions of the knee extensor mechanism was carried out. The dysfunction of femoral quadriceps injured was determined, which was the most marked during walking, and it was compensated by the increase of bioelectric activity of contralateral limb quadriceps, as well as by bilateral hyperfunction of femoral muscles and changing the angular deviations of body segments in frontal and sagittal planes. The walking pathological pattern is characterized by the decrease of walking speed and step length and also by the absence of back push of involved limb. The criteria revealed can be used for functional outcome evaluation.