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

L. Gremillard, L. Martin, L. Zych, Emilie Crosnier, J. Chevalier, A. Charbouillot, P. Sainsot, J. Espinouse, J.-L. Aurelle

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)7545-7555
Number of pages11
JournalActa Biomaterialia
Volume9
Issue number7
Early online date26 Mar 2013
DOIs
Publication statusPublished - Jul 2013

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