What is Joint Replacement?

Total Knee Replacement
Joint Replacement
There are approximately 800,000 hip and knee replacements performed every year in the United States.1 The technique of joint replacement typically uses metal and plastic implants to replace the damaged sections of bone and joint cartilage. The joint itself is not replaced, only the damaged bone and cartilage surfaces.
Knee Replacement
Total knee replacement replaces damaged cartilage and bone with an artificial surface. The replacement implants include a metal alloy on the end of the femur (thighbone) and polyethylene (plastic) on the tibia (shinbone) and patella (kneecap). The implants create a new, smoothly functioning joint that prevents painful bone-on-bone contact.
- DeFrances CJ, Hall MJ, Podgornik MN: "2006 National Hospital Discharge Survey. Advance data from vital and health statistics," No. 359, Hyattsville, MD: National Center for Health Statistics, 2008.

