This is the common perception of Knee Osteoarthritis in our country where Primary Hip Osteoarthritis is rare. However in the recent past, it has been realized that not only are the elderly at definite risk of Osteoarthritis but many more of the middle aged and even young. Osteoarthritis is the commonest form of joint disease (arthritis) and is a leading cause of disability in older individuals in India and many countries. It is the common perception that wear and tear inevitable with aging alone leads to Osteoarthritis, but this is not the whole truth. As we shall see not only the elderly, but others are also vulnerable to Osteoarthritis.