Background : Osteoarthritis (OA) is the most common type of arthritis. OA is a chronic degenerative disorder of multifactorial etiology characterized by the loss of articular cartilage, hypertrophy of bone at the margins, subchondral sclerosis, and range of biochemical and morphological alterations of the synovial membrane and joint capsule. For finding the current burden of OA and its association with lifestyle related factors, it was essential to undertake such a study on the Knee Osteoarthritis