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Combining ageing and wear to assess the durability of zirconia-based ceramic heads for total hip arthroplasty

Paper ID Volume ID Publish Year Pages File Format Full-Text
550 46 2013 11 PDF Available
Title
Combining ageing and wear to assess the durability of zirconia-based ceramic heads for total hip arthroplasty
Abstract

The degradation of zirconia-based ceramic components for total hip arthroplasty (head and cup) has been the topic of many works. However, the correlation between what is measured in vivo and what is expected from in vitro simulations on hip simulators may be sometimes feeble, especially where zirconia component are concerned, mainly due to a lack of representativeness of in vitro experiments. The present study seeks to explore the combined effects of hydrothermal ageing and wear on zirconia components. It shows that hydrothermal ageing increases the roughness of zirconia components, which in turn might increase the wear rate of the polyethylene counterparts. Moreover, the friction during hip simulation increases the ageing rate of the zirconia components. This auto-accelerating degradation may explain some of the poor long-term in vivo results of zirconia hip prostheses reported in the literature. Finally, it is shown that zirconia-toughened alumina components may be free from this combined degradation.

Keywords
Alumina; Zirconia; Hip replacement prosthesis; Wear mechanism; Zirconia toughened alumina; Ageing
First Page Preview
Combining ageing and wear to assess the durability of zirconia-based ceramic heads for total hip arthroplasty
Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 9, Issue 7, July 2013, Pages 7545–7555
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering