Abstract
Screening of candidate materials by simple and affordable testing machines has been part of the development of orthopedic bearings since the 1970s. The promising candidates would then be tested in a joint simulator and in vivo testing of the most promising materials would follow. However, there is uncertainty about the capability of pin-on-disk (POD) testers to realistically simulate clinically relevant wear mechanisms with repeatability across different laboratories. We describe the factors, conditions, and potential pitfalls involved in the setup of POD testing for wear assessment of UHMWPE and provide a quick review and critique of the international standard testing methodologies of POD testing relevant to UHMWPE.
Original language | English (US) |
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Title of host publication | UHMWPE Biomaterials Handbook |
Subtitle of host publication | Ultra High Molecular Weight Polyethylene in Total Joint Replacement and Medical Devices |
Publisher | Elsevier |
Pages | 553-578 |
Number of pages | 26 |
ISBN (Electronic) | 9780323354011 |
ISBN (Print) | 9780323354356 |
DOIs | |
State | Published - Jan 1 2015 |
Keywords
- Archard’s law
- ASTM F732
- contact area
- cross shear
- pin-on-disk testing
- stress level
- surface finish
- UHMWPE
- wear factor
ASJC Scopus subject areas
- General Engineering
- General Materials Science