Moveable knee implants may be able to help the more than 300,000 people in the United States that get knee replacements each year, and may be an effective way to help relieve pain and potentially improve function in people with arthritis and other knee troubles.
Total knee arthroplasty (TKA), was pioneered by DePuy Orthopaedics, and Johnson & Johnson company. These mobile-bearing knee implants more closely mimic the natural knee. Where most traditional knee implant parts are firmly attached to each other, mobile-bearing knees have parts that can move. The ability of the parts to move helps reduce the “contact stress” between the parts, which may help prevent them from wearing out.
As a result, joint replacement may be an option for many more people and help them achieve a more active lifestyle. Two such mobile-bearing knee systems are available: The LCS Knee which has been used successfully for nearly 25 years, and the P.F.C. Sigma Knee with a rotating platform. This system allows surgeons to select either a fixed or mobile knee depending on what is best for the patient.
“Both systems offer patients the potential for greater freedom and the possibility of long-lasting performance,” said Scott Dutiel, Director of DePuy Knee Marketing. “Because people are living longer, more active lives, mobile- bearing implants may be the right choice,” he said. DePuy is the only company to offer a mobile-bearing knee in the United States.