Abstract
In the article authors describe the basic pathogenetic mechanisms of development of osteoarthritis, a modern approach to the treatment of this group of diseases. Outlined the problems of treatment of coxarthrosis, gonarthrosis in elderly patients with the presence of concomitant somatic pathology. The study used a unique method for estimating motion in gait. Held objectification of treatment results in aged patients with knee joint hyaluronic acid.