Osteoarthritis is a degenerative disorder of joints mainly occurs in hip and knee joints (weight bearing joints) characterised by loss of articular cartilage and periarticular bone remodelling. OA causes joint pain, typically worse with weight bearing and activity, and stiffness after inactivity. Several factors may increase the risk of developing osteoarthritis of the knee and hip joints are Heredity, Weight: Weight increases pressure on joints, aging factor: The ability of cartilage to heal itself decreases as people age, Gender: Women who are older than 50 years of age are more likely to develop OA Knee than men. Trauma: Previous injury to the knee, including sports injuries, can lead to OA Knee. Repetitive stress injuries: These are usually associated with certain occupations, particularly those that involve kneeling or squatting, walking for long distance and prolonged standing.