NDLI: Biotribological study of large diameter ceramic-on-CFR-PEEK hip joint including fluid uptake, wear and frictional heating

Content Provider	Springer Nature Link
Author	Wang, Qian Qian Wu, Jun Jie Unsworth, Anthony Briscoe, Adam Jarman Smith, Marcus Lowry, Cor Simpson, David Collins, Simon
Copyright Year	2012
Abstract	A novel material combination of a large diameter Biolox$^{®}$ Delta zirconia-toughened-alumina (ZTA) head and a pitch-based carbon fibre reinforced poly ether–ether-ketone (CFR-PEEK) MOTIS$^{®}$ cup has been studied. The acetabular cups were inclined at three angles and tested using Durham Hip Simulators. The different inclination angles used did not have a significant effect on the wear rates (ANOVA, p = 0.646). Averaged over all cups, the wear rates were calculated to be 0.551 ± 0.115 mm$^{3}$/10$^{6}$ cycles and 0.493 ± 0.107 mm$^{3}$/10$^{6}$ cycles taking into account two types of soak controls; loaded at room temperature and unloaded at 37 °C respectively. Averaged across all femoral heads, the wear rate was 0.243 ± 0.031 mm$^{3}$/10$^{6}$ cycles. The temperature change of the lubricant caused by the frictional heat was measured in situ. Friction factors measured using the Durham Friction Simulator were lower for the worn CFR-PEEK cups compared with unworn. This correlated with the decreased surface roughness. Even though relatively high friction was observed in these hemispherical hard-on-soft bearings, the wear rate is encouragingly low.
Starting Page	1533
Ending Page	1542
Page Count	10
File Format	PDF
ISSN	09574530
Journal	Journal of Materials Science: Materials in Medicine
Volume Number	23
Issue Number	6
e-ISSN	15734838
Language	English
Publisher	Springer US
Publisher Date	2012-03-28
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Metallic Materials Surfaces and Interfaces, Thin Films Polymer Sciences Biomaterials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods
Content Type	Text
Resource Type	Article
Subject	Biomaterials Biophysics Bioengineering Biomedical Engineering

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