Cowie, R.M. orcid.org/0000-0003-3903-5916, Briscoe, A. orcid.org/0000-0002-8241-2353 and Jennings, L.M. orcid.org/0000-0003-1446-4511 (2023) The influence of cross shear and contact pressure on the wear of UHMWPE-on-PEEK-OPTIMA™ for use in total knee replacement. Journal of the Mechanical Behavior of Biomedical Materials, 148. 106196. ISSN 1751-6161
Abstract
PEEK-OPTIMA™ polymer is being considered as an alternative material to cobalt chrome in the femoral component of total knee arthroplasty to give a metal-free knee replacement system. Simple geometry pin-on-plate wear simulation can be used to systematically investigate and understand the wear of materials under many different conditions. The aim of this study was to investigate the wear of UHMWPE-on-PEEK-OPTIMA™ under a range of contact pressure (2.1–80 MPa) and cross-shear ratio (0–0.18) conditions.
With increasing contact pressure, there was a trend of decreasing UHMWPE wear factor with a significant difference (p<0.001) in the wear factor of UHMWPE under the different contact pressure conditions of interest. Under uniaxial motion (cross-shear ratio = 0), the wear of UHMWPE was low, introducing multi-axial motion increased the wear of the UHMWPE. There was a significant difference (p<0.01) in the wear factor at different cross-shear ratios however, post hoc analysis showed only the study carried out under unidirectional motion to be significantly different from the other conditions.
With varying contact pressure and cross-shear ratio, the wear of UHMWPE against PEEK-OPTIMA™ polymer showed similar trends to previous studies of UHMWPE-on-cobalt chrome.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | Knee arthroplasty; PEEK-OPTIMA™; UHMWPE; Wear; Contact pressure; Cross shear ratio |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Medical and Biological Engineering (iMBE) (Leeds) |
Funding Information: | Funder Grant number Wellcome Trust 088908/Z/09/Z Wellcome Trust 088908/Z/09/Z EPSRC (Engineering and Physical Sciences Research Council) EP/J017620/1 EPSRC (Engineering and Physical Sciences Research Council) EP/N00941X/1 EPSRC (Engineering and Physical Sciences Research Council) EP/K029592/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Oct 2023 16:48 |
Last Modified: | 22 Jan 2025 09:54 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jmbbm.2023.106196 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:204466 |