The main indication of joint replacement is when osteoarthritis reaches the advanced stage. Osteoarthritis is an age related wear and tear of the joints that happen after the age of 35 -40. After the age of 40, stage I arthritis happens when the cartilage between the joints starts to degenerate. The initial stages can be managed by tablets, physiotherapy and regular exercise. When it reaches stage II, the joint lubrication becomes lesser over time, just like in the engine of a car. Patients can be benefited from an injection in the joint called viscous supplement. When it reaches stage III, Patients have continuous pain throughout the day and their quality of life is severely impacted. In such conditions, we do a key-hole surgery and address cartilage damage.