metal-on-polyethylene

Metal-on-polyethylene refers to a type of joint used in hip replacements and other orthopedic implants. In this system, a metal ball (part of the artificial joint) moves against a plastic (polyethylene) socket. The metal provides strength and durability, while the polyethylene offers a smooth surface to reduce friction, allowing for better movement. This combination aims to provide a balance between wear resistance and flexibility, improving the longevity of the implant and the quality of life for patients. However, over time, the wear from the polyethylene can lead to debris, which may affect the surrounding tissues.