Partridge, S orcid.org/0000-0003-3509-1662, Buckley, P, de Boer, G orcid.org/0000-0002-5647-1771 et al. (1 more author) (2018) A novel method to measure rim deformation in UHMWPE acetabular liners. Medical Engineering & Physics, 59. pp. 56-62. ISSN 1350-4533
Abstract
Fluoroscopy studies of total hip replacement (THR) have shown that the femoral head and acetabular cup can separate in vivo, causing edge loading on the rim of the cup. Pre-clinical testing of THR involves ISO standard motion and loading parameters that are representative of a standard walking gait. However, a requirement for more robust testing of THR has been identified and protocols for edge loading in hip simulators have been developed. This technical note describes a method to measure rim wear and deformation on ultra-high molecular weight polyethylene acetabular liners using 2D contacting profilometry and Matlab® analysis. The method is demonstrated on liners that have been subjected to edge loading in hip simulator tests and that have been retrieved at revision surgery. A quantitative and qualitative evaluation of the rim deformation was performed with good repeatability using the method.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 IPEM. Published by Elsevier Ltd. This is an author produced version of a paper published in Medical Engineering & Physics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Total hip replacement; UHMWPE; Wear; Edge loading; Hip simulator |
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 Medical and Biological Engineering (iMBE) (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Funding Information: | Funder Grant number Depuy International Ltd N/A |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 Jul 2018 15:25 |
Last Modified: | 27 Jul 2019 00:43 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.medengphy.2018.04.023 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:133607 |