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. 22 - 25 Feb 2009. 1 pp, p. 2310.

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Description/Abstract

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)
Venue - Dates: 55th Annual Meeting of the Orthopaedic Research Society, 2009-02-22 - 2009-02-25
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Organisations: Bioengineering Group
ePrint ID: 71730
Date :
Date Event
February 2009Published
Date Deposited: 22 Dec 2009
Last Modified: 18 Apr 2017 21:01
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/71730

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