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The effect of accelerated aging on the wear of UHMWPE

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Abstract

Oxidative degradation of UHMWPE has been found to be a cause of elevated wear rate of the polymer in total joint replacement leading to failure of these devices. In order to evaluate long term stability of polymers, various accelerated aging methods have been developed. In this study, wear rates of shelf aged UHMWPE and “accelerated aged” UHMWPE were compared using a multi-directional pin-on-plate wear test machine in order to evaluate the effect of the accelerated aging on wear. Wear factors of the aged materials were found to depend on their density, which is a measure of oxidation level. Finally, accelerated aging was calibrated against shelf aging in terms of wear rate.

© 2001 Kluwer Academic Publishers

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Authors and Affiliations

  1. School of Mechanical Engineering, University of Leeds, Leeds, LS2 9JT, UK

    Hideyuki Sakoda & John Fisher

  2. School of Mechanical and Manufacturing Engineering, The Queen's University of Belfast, Belfast, BT9 5AH, UK

    Shiying Lu & Fraser Buchanan

Authors
  1. Hideyuki Sakoda
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  2. John Fisher
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  3. Shiying Lu
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  4. Fraser Buchanan
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Correspondence to John Fisher.

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Sakoda, H., Fisher, J., Lu, S. et al. The effect of accelerated aging on the wear of UHMWPE. Journal of Materials Science: Materials in Medicine 12, 1043–1047 (2001). https://doi.org/10.1023/A:1012898107727

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  • DOI: https://doi.org/10.1023/A:1012898107727

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