Knee replacement surgery is really a cartilage replacement. The knee itself is not replaced, only the damaged cartilage and bone ends. Knee replacement implants include a metal alloy on the end of the thighbone and polyethylene (plastic) on the top of the tibia and underneath the kneecap. The implant is designed to create a new, smoothly functioning joint that can prevent painful bone-on-bone contact. Your surgeon may elect to replace all or part of your knee, depending on your condition and the extent to which your knee is affected by arthritis.

When arthritis knee pain severely limits your ability to walk, work, or perform even simple activities, knee replacement should be considered.

Proper preparation and a great attitude are the best ways to accomplish a rapid recovery from joint replacement. With the help of a physical therapist or trainer, get yourself as physically fit as you can before surgery. Proper nutrition, weight loss (if overweight), and an optimal medical condition can help avoid complications. See your physician prior to surgery to ensure your blood pressure, heart, and lungs are in good shape. See a surgeon who specializes in joint surgery and go to a hospital that has a dedicated joint unit to provide you with excellent care. Be prepared to continue with your exercise program after surgery.

After a total joint replacement surgery, many patients experience reduced pain, increased mobility, and improved quality of life. The performance and life span of an implant depends on many factors, including the patient's presurgical physical condition, anatomy, weight, activity, and willingness to follow surgeon's instructions before and after surgery. Joint surgery involves potential risks and requires recovery time. Individual results may vary and only an orthopedic surgeon can determine if surgery is right for you.