Posterior-stabilized total knee prosthesis

A posterior-stabilized total knee prosthesis is a surgical implant designed to replace a severely damaged or degenerative knee joint when the posterior cruciate ligament is no longer functional. It uses a mechanical ‘cam and post’ system to restore stability, with components made of metal, ceramic, or polyethylene to mimic natural joint movement, often used in complex cases like severe deformities or advanced arthritis.

These devices are typically regulated as high-risk implants, requiring rigorous pre-market evaluation depending on the jurisdiction. They are supplied sterile and may be fixed with bone cement or cementless techniques, depending on clinical needs and patient anatomy. Classification and supply vary by country, but they are generally intended for use by orthopedic surgeons in specialized procedures.