Metal-on-polyethylene total hip prosthesis

Metal-on-polyethylene total hip prostheses are artificial joint replacements designed to restore function and relieve pain in damaged or diseased hip joints, such as those affected by severe arthritis or trauma. These implants consist of a femoral component (fitting the thigh bone) and an acetabular cup (lining the pelvis socket), where a metal femoral head articulates against a polyethylene acetabular surface to mimic natural joint movement.

These devices are typically implanted during surgery and may use bone cement or press-fit techniques for fixation. Regulation varies by jurisdiction, but they are generally classified as high-risk implants due to their permanent placement and long-term use. Availability depends on local medical guidelines and manufacturer distribution channels.