What are knee replacement made of?

Knee replacements are typically made from a combination of materials, including metals, polymers, and ceramics. The femoral component is often made from cobalt-chromium alloy or titanium, while the tibial component usually consists of a titanium base with a polymer insert, commonly made of ultra-high-molecular-weight polyethylene. The patellar component can be made from a similar polymer or a ceramic material. These materials are chosen for their strength, durability, and biocompatibility.