Leng, J, Al-Hajjar, M, Wilcox, R et al. (3 more authors) (2017) Dynamic virtual simulation of the occurrence and severity of edge loading in hip replacements associated with variation in the rotational and translational surgical position. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 231 (4). pp. 299-306. ISSN 0954-4119
Abstract
Variation in the surgical positioning of total hip replacement can result in edge loading of the femoral head on the rim of the acetabular cup. Previous work has reported the effect of edge loading on the wear of hip replacement bearings with a fixed level of dynamic biomechanical hip separation. Variations in both rotational and translational surgical positioning of the hip joint replacement combine to influence both the biomechanics and the tribology including the severity of edge loading, the amount of dynamic separation, the force acting on the rim of the cup and the resultant wear and torque acting on the cup. In this study, a virtual model of a hip joint simulator has been developed to predict the effect of variations in some surgical positioning (inclination and medial-lateral offset) on the level of dynamic separation and the contact force of the head acting on the rim as a measure of severity of edge loading. The level of dynamic separation and force acting on the rim increased with increased translational mismatch between the centres of the femoral head and the acetabular cup from 0 to 4 mm and with increased cup inclination angle from 45° to 65°. The virtual model closely replicated the dynamics of the experimental hip simulator previously reported, which showed similar dynamic biomechanical trends, with the highest level of separation being found with a mismatch of 4 mm between the centres of the femoral head and acetabular cup and 65° cup inclination angle.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © IMechE 2017. This is an author produced version of a paper published in Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Total hip replacement, edge loading, hip separation, inclination angle, surgical position |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Systems and Design (iESD) (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Medical and Biological Engineering (iMBE) (Leeds) |
Funding Information: | Funder Grant number EPSRC N/A (IKC) EPSRC EP/K029592/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 03 Apr 2017 12:12 |
Last Modified: | 19 Apr 2017 13:05 |
Published Version: | https://doi.org/10.1177/0954411917693261 |
Status: | Published |
Publisher: | SAGE Publications |
Identification Number: | 10.1177/0954411917693261 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:114406 |