Osteoarthritis is a joint disease of the joints, in which degenerative-dystrophic lesions of the cartilage and/or bone tissue. They begin with the cartilage in the area of the articular surfaces of the knee and gradually spread to the entire joint. The first stage of the disease is characterized by a progressive destruction of cartilage tissue, which is accompanied by pain and limited joint mobility. The second stage is characterized by a progressive destruction of bones, causing severe pain and limited joint mobility. In the latter stage, the pain syndrome is accompanied by a decrease in neurological activity, muscle atrophy, and, finally, a violation of the musculoskeletal system.The disease is based on degenerative-dystrophic processes in the joint itself, in particular, in the area of the articular surfaces of the knee. The first manifestation of osteoarthritis is a characteristic joint pain syndrome, which is accompanied by limited joint mobility, accompanied by slight increases in body temperature and, finally, by impairment of the musculoskeletal system. The most common manifestations of osteoarthritis are knee pain, which is usually associated with various joint diseases. In the absence of obvious pathological changes, a diagnosis of osteoarthritis is made when the patient complains of aching, burning or crunching pains.Pain in osteoarthritis of the knee, as a rule, increases with the progression of the disease, accompanied by swelling, acute pain, and, finally, a violation of the joint functions. In the absence of obvious pathological changes, the patient is referred to a neurologist.In the absence of a complete destruction of cartilage tissue, the pain is confined to the area of the articular surfaces of the thighs. The pain syndrome increases in the morning, radiates to the right arm, which is accompanied by a decrease in sensitivity and mobility. In the evening, the pain syndrome passes, and at the moment of turning the head, there is a sharp increase pain.In the first stage osteoarthritis of the knee joint, the pain is caused by destruction of cartilage tissue, accompanied by severe pain and a significant decrease in joint mobility. In the second stage, the acute pain is caused by destruction of bone tissue, accompanied by a change in sensitivity and mobility, and, finally, the destruction of the entire joint.Among the the known manifestations of osteoarthritis of the knee joint, there are not many. All these are associated with a violation of the function of the musculoskeletal system, which is manifested by pain, limited mobility, and, finally, impairment of the whole joint. Pain in osteoarthritis of the knee joint is quite characteristic. The pain syndrome can be caused by:traumatic damage to the muscles of the knee joint, such as torn ligaments, menisci,