Patients with artificial knees were still going strong after 20 years, even jogging or playing tennis, researchers report.
According to the study, most people who had knee replacements between 1975 and 1989 at an Indiana hospital and lived for another 20 years maintained an active lifestyle. All reported at least “moderate” activity.
Knee replacement surgery, also called knee arthroplasty, is done to relieve pain and restore normal use of the joint, usually for people afflicted by severe arthritis. During the procedure, a surgeon removes damaged bone and cartilage, and implants an artificial knee. The devices are made from plastic, polymers and metal alloys, and are available in different designs geared toward different patients’ needs.
There are between 300,000 and 500,000 knee replacement surgeries done annually in the United States.
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