Experimental validation of a new biphasic model of the contact mechanics of the porcine hip

Article


Li, J., Wang, Q., Jin, Z., Williams, S., Fisher, J. and Wilcox, R. 2014. Experimental validation of a new biphasic model of the contact mechanics of the porcine hip. Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine. 228 (6), pp. 547-555. https://doi.org/10.1177/0954411914537618
TypeArticle
TitleExperimental validation of a new biphasic model of the contact mechanics of the porcine hip
AuthorsLi, J., Wang, Q., Jin, Z., Williams, S., Fisher, J. and Wilcox, R.
Abstract

Hip models that incorporate the biphasic behaviour of articular cartilage can improve understanding of the joint function, pathology of joint degeneration and effect of potential interventions. The aim of this study was to develop a specimen-specific biphasic finite element model of a porcine acetabulum incorporating a biphasic representation of the articular cartilage and to validate the model predictions against direct experimental measurements of the contact area in the same specimen. Additionally, the effect of using a different tension-compression behaviour for the solid phase of the articular cartilage was investigated. The model represented different radial clearances and load magnitudes. The comparison of the finite element predictions and the experimental measurement showed good agreement in the location, size and shape of the contact area, and a similar trend in the relationship between contact area and load was observed. There was, however, a deviation of over 30% in the magnitude of the contact area, which might be due to experimental limitations or to simplifications in the material constitutive relationships used. In comparison with the isotropic solid phase model, the tension-compression solid phase model had better agreement with the experimental observations. The findings provide some confidence that the new biphasic methodology for modelling the cartilage is able to predict the contact mechanics of the hip joint. The validation provides a foundation for future subject-specific studies of the human hip using a biphasic cartilage model.

Research GroupBiophysics and Bioengineering group
PublisherSage
JournalProceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine
ISSN2041-3033
Publication dates
Print22 Jun 2014
Publication process dates
Deposited05 Jun 2017
Accepted22 Apr 2014
Output statusPublished
Publisher's version
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Copyright Statement

his article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (http://www.uk.sagepub.com/aboutus/openaccess.htm).

Digital Object Identifier (DOI)https://doi.org/10.1177/0954411914537618
LanguageEnglish
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