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Wear and Friction of UHMWPE-on-PEEK OPTIMA™
PEEK-OPTIMA™ is being considered as an alternative bearing material to cobalt chrome in the femoral component of total knee replacement to provide a metal-free implant. The aim of this study was to investigate the influence of lubricant temperature (standard rig running and elevated temperature (~36...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195677/ https://www.ncbi.nlm.nih.gov/pubmed/30265867 http://dx.doi.org/10.1016/j.jmbbm.2018.09.021 |
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author | Cowie, Raelene M. Briscoe, Adam Fisher, John Jennings, Louise M. |
author_facet | Cowie, Raelene M. Briscoe, Adam Fisher, John Jennings, Louise M. |
author_sort | Cowie, Raelene M. |
collection | PubMed |
description | PEEK-OPTIMA™ is being considered as an alternative bearing material to cobalt chrome in the femoral component of total knee replacement to provide a metal-free implant. The aim of this study was to investigate the influence of lubricant temperature (standard rig running and elevated temperature (~36 °C)) on the wear of a UHMWPE-on-PEEK OPTIMA™ bearing couple using different lubricant protein concentrations (0%, 2%, 5%, 25% and 90% bovine serum) in a simple geometry pin-on-plate configuration. Friction was also investigated under a single temperature condition for different lubricant protein concentrations. The studies were repeated for UHMWPE-on-cobalt chrome in order to compare relationships with temperature (wear only) and lubricant protein concentration (wear and friction). In low lubricant protein concentrations (≤ 5%) there was no influence of temperature on the wear factors of UHMWPE-on-PEEK. With 25% bovine serum, the wear factor of UHMWPE-on-PEEK reduced by half at elevated temperature. When tested in high protein concentration (90% serum), there was no influence of temperature on the wear factor of UHMWPE-on-PEEK. These temperature dependencies were not the same for UHMWPE-on-cobalt chrome. For both material combinations, there was a trend of decreasing friction with increasing protein concentration once protein was present in the lubricant. This study has shown the importance of the selection of appropriate test conditions when investigating the wear and friction of different materials, in order to minimise test artefacts such as polymer transfer, and protein precipitation and deposition. |
format | Online Article Text |
id | pubmed-6195677 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-61956772019-01-01 Wear and Friction of UHMWPE-on-PEEK OPTIMA™ Cowie, Raelene M. Briscoe, Adam Fisher, John Jennings, Louise M. J Mech Behav Biomed Mater Article PEEK-OPTIMA™ is being considered as an alternative bearing material to cobalt chrome in the femoral component of total knee replacement to provide a metal-free implant. The aim of this study was to investigate the influence of lubricant temperature (standard rig running and elevated temperature (~36 °C)) on the wear of a UHMWPE-on-PEEK OPTIMA™ bearing couple using different lubricant protein concentrations (0%, 2%, 5%, 25% and 90% bovine serum) in a simple geometry pin-on-plate configuration. Friction was also investigated under a single temperature condition for different lubricant protein concentrations. The studies were repeated for UHMWPE-on-cobalt chrome in order to compare relationships with temperature (wear only) and lubricant protein concentration (wear and friction). In low lubricant protein concentrations (≤ 5%) there was no influence of temperature on the wear factors of UHMWPE-on-PEEK. With 25% bovine serum, the wear factor of UHMWPE-on-PEEK reduced by half at elevated temperature. When tested in high protein concentration (90% serum), there was no influence of temperature on the wear factor of UHMWPE-on-PEEK. These temperature dependencies were not the same for UHMWPE-on-cobalt chrome. For both material combinations, there was a trend of decreasing friction with increasing protein concentration once protein was present in the lubricant. This study has shown the importance of the selection of appropriate test conditions when investigating the wear and friction of different materials, in order to minimise test artefacts such as polymer transfer, and protein precipitation and deposition. Elsevier 2019-01 /pmc/articles/PMC6195677/ /pubmed/30265867 http://dx.doi.org/10.1016/j.jmbbm.2018.09.021 Text en © 2018 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Cowie, Raelene M. Briscoe, Adam Fisher, John Jennings, Louise M. Wear and Friction of UHMWPE-on-PEEK OPTIMA™ |
title | Wear and Friction of UHMWPE-on-PEEK OPTIMA™ |
title_full | Wear and Friction of UHMWPE-on-PEEK OPTIMA™ |
title_fullStr | Wear and Friction of UHMWPE-on-PEEK OPTIMA™ |
title_full_unstemmed | Wear and Friction of UHMWPE-on-PEEK OPTIMA™ |
title_short | Wear and Friction of UHMWPE-on-PEEK OPTIMA™ |
title_sort | wear and friction of uhmwpe-on-peek optima™ |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195677/ https://www.ncbi.nlm.nih.gov/pubmed/30265867 http://dx.doi.org/10.1016/j.jmbbm.2018.09.021 |
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