| abstract |
An orthopedic joint prosthesis includes a first joint part and a second joint part. Each of the parts has a bearing surface that abuts the corresponding bearing surface of the other part when the prosthesis is implanted and is each formed of a metal body. Each metal body has a ceramic coating applied to the bearing surface, the coating comprising a chromium compound and having a thickness of at least about 5 μm. For example, the coatings may be different from each other such that the hardness difference between the coating materials applied to the first and second joint parts is about 5000 MPa or less. Preferably, the metal forming at least one of the first and second joint parts has a coefficient of at least about 150 MPa. |