Cartilage covers the ends of the knee bones.
The knee, a major weight-bearing joint, is held together by muscles and ligaments that allow your leg to bend and straighten so you can walk and climb stairs. When a knee becomes diseased or injured, simple movements can be painful and take the joy out of life. Most people want relief from the pain and disability caused by severe arthritis. Your reasons for having surgery are very personal. You and your doctor may decide that total knee replacement surgery is the best option to help relieve much of your pain.