More than 600,000 knee replacement surgeries are performed each year, making it one of the most the most common orthopaedic surgeries in the U.S. The procedure relieves pain from osteoarthritis, which occurs when the protective cartilage in the knee breaks down with age or overuse. As a result, the bones rub together, which can eventually damage the knee joint.
Traditional knee replacement includes a hospital stay of up to three days. In recent years, surgeons found that some people do well without the hospitalization, thanks to new medicines that control bleeding, better pain management techniques, and physical therapy, which gets people up and walking soon after the surgery.