Knee joint replacement, also known as knee arthroplasty, is a surgical procedure designed to replace an injured or deteriorating knee with an artificial joint, known as a prosthesis. This prosthesis is constructed from metal alloys, high-grade plastics, and polymers, and is designed to replicate the function of a natural knee. According to the American Academy of Orthopaedic Surgeons (AAOS), these prosthetic knees can be tailored to fit an individual’s needs and specifications. When selecting a prosthetic knee, a doctor will consider various factors such as the patient’s age, weight, activity level, and overall health.
The surgical procedure itself typically takes less than two hours. During this time, the surgeon removes the damaged knee joint and replaces it with the artificial prosthesis. Despite the relatively short duration of the surgery, the recovery and rehabilitation period can be extensive, often lasting several months. This period involves physical therapy and exercises to ensure the new joint functions properly and to regain strength and mobility in the knee.
Knee replacement surgery is a common procedure in the United States. The AAOS reports that more than 600,000 knee replacements are performed annually. This high frequency underscores the procedure’s effectiveness in alleviating pain and restoring function for individuals suffering from severe knee damage due to conditions like osteoarthritis, rheumatoid arthritis, or traumatic injury.
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Knee joint replacement is often considered when non-surgical treatments such as medications, physical therapy, and lifestyle changes fail to relieve chronic knee pain or improve joint function. It is a highly effective option that can significantly enhance the quality of life for many patients, allowing them to return to daily activities with reduced pain and improved mobility.
