Wear of Ultra High Molecular Weight Polyethylene against Synthetic Sapphire as Bearing Coating for Total Joint Replacements
Date of Original Version
Materials commonly found in hip replacements are a polymer paired with metals or alloys. Tribological behavior of polyethylene bearing surfaces against synthetic sapphire are compared against other bearing combinations to evaluate sapphire as a viable means to lower the incidence of revision surgery by mitigating production of wear debris. Sapphire disks against polyethylene plates were tested utilizing a tribometer. The polyethylene wear rate was found to be 22.6mm3 per year, less than the 40-80mm3 per year typically found in traditional hip replacements. A power law function is presented correlating a decreasing friction coefficient as polyethylene volume loss increases as V0.88. These results show potential for synthetic sapphire as an alternative bearing surface in joint replacements
K.D. Gemmell and D.M.L. Meyer. Wear of Ultra High Molecular Weight Polyethylene against Synthetic Sapphire as Bearing Coating 7/8 for Total Joint Replacements . Res Dev Material Sci . 6(2). RDMS.000632.2018. DOI: 10.31031/RDMS.2018.06.000632
Available at: http://dx.doi.org/10.31031/RDMS.2018.06.000632
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