Total knee replacement is a surgical procedure where a damaged or worn-out knee joint is replaced with an artificial joint, often made of metal and plastic. This surgery is typically recommended for individuals suffering from severe knee pain due to conditions like osteoarthritis or rheumatoid arthritis. The goal is to relieve pain and restore function, allowing patients to return to daily activities. During the procedure, the surgeon removes the damaged cartilage and bone from the knee and replaces it with the artificial components. Recovery usually involves physical therapy to strengthen the knee and improve mobility. Most patients experience significant pain relief and improved quality of life after the surgery.