Osteoarthritis is a degenerative degeneration of the joints, mostly found in the knee, hip, ankle and other weight-bearing joints, other joints can also be involved, osteoarthritis of the knee joint is also known as “old cold leg”, mainly due to ageing, repeated wear and tear caused by degeneration, injury, exfoliation, exposure of subchondral bone, hardening of the joint surface, reactive hyperplasia of the edge of the joint surface. Also known as osteoarthrosis, degenerative arthritis, age-related arthritis, etc. Obesity, trauma, and developmental deformities are often the causative factors of this disease. The clinical manifestations include slowly progressive joint pain, swelling, stiffness, limitation of motion, and deformity, etc. X-rays show narrowing of the joint space, sclerosis of the subchondral bone in the weight-bearing area, hyperplasia of the bone at the joint edge, or free bodies and intraosseous cystic changes.