Predicting UHMWPE wear: evidence for rapid decline in wear rates following a change in sliding direction

Dressler, Matthew, Ernsberger, Craig, Strickland, Michael, Taylor, Mark, Render, Todd and Heldreth, Mark (2009) Predicting UHMWPE wear: evidence for rapid decline in wear rates following a change in sliding direction. At 55th Annual Meeting of the Orthopaedic Research Society, Las Vegas, US, 22 - 25 Feb 2009. 1pp, 2310-2310.


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Extending the service life of total joint replacements by improving the wear resistance of UHMWPE remains a priority that is driven by the demands of a more active patient [1]. Extensive experimental testing has shown that wear rates depend on the details of the wear path: Unidirectional paths produce minimal wear while those with direction change produce high wear [2-4]. This implies that a linear wear path that undergoes a sudden change in direction will generate a high wear rate immediately following that direction change and then will transition to a near zero wear rate with continued sliding. To the authors’ knowledge, this variation in wear rate with sliding distance after a change in sliding direction has not been explored experimentally. The goal of this study was to investigate the incremental wear as the sliding distance is increased between step-changes in sliding direction. We hypothesized that small increases in sliding distance after a direction change would produce additional wear while no additional wear would be produced at longer sliding distances sufficient to reestablish ‘unidirectional’ sliding.

Item Type: Conference or Workshop Item (Poster)
Related URLs:
Subjects: R Medicine > RD Surgery
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Bioengineering Sciences
Faculty of Engineering and the Environment > Engineering Sciences > Bioengineering Research Group
ePrint ID: 71730
Date Deposited: 22 Dec 2009
Last Modified: 27 Mar 2014 18:51

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