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Charlotte, NC
A female asked:

What is an artificial joint made from?

3 doctor answers7 doctors weighed in
Dr. Christopher Dougherty
Orthopedic Surgery 26 years experience
Artificial joints: Typically they are made from surgical steel and a special plastic but sometimes parts are also made of ceramic.
Dr. Michael Granberry
Orthopedic Surgery 38 years experience
Differing materials: Cobalt chrome alloys- very strong, and works well as a bearing surface. Titanium and its alloys- works well with contact to bone, more flexible than cocr, which is good sometimes. Ultrahigh molecular weight polyethylene- the main plastic that is used. Ceramics- can be polished smoother than cocr, and is supposed to lower wear when used against poly, or ceramic itself. Steel is not used anymore.
Dr. Bertrand Kaper
Orthopedic Reconstructive Surgery 30 years experience
Metal and Plastic: Most hip and knee replacements are made of a combination of materials that have been shown through years of research and use to be the most durable. Surgeons can choose between titanium, chrome/cobalt alloys, ceramic, zirconium and plastic (usually polyethylene).

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Last updated May 6, 2016

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