Meng, Q, Liu, F, Fisher, J et al. (1 more author) (2013) Effect of simplifications of bone and components inclination on the elastohydrodynamic lubrication modeling of metal-on-metal hip resurfacing prosthesis. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 227 (5). 523 - 534. ISSN 0954-4119
Abstract
It is important to study the lubrication mechanism of metal-on-metal hip resurfacing prosthesis in order to understand its overall tribological performance, thereby minimize the wear particles. Previous elastohydrodynamic lubrication studies of metal-on-metal hip resurfacing prosthesis neglected the effects of the orientations of the cup and head. Simplified pelvic and femoral bone models were also adopted for the previous studies. These simplifications may lead to unrealistic predictions. For the first time, an elastohydrodynamic lubrication model was developed and solved for a full metal-onmetal hip resurfacing arthroplasty. The effects of the orientations of components and the realistic bones on the lubrication performance of metal-on-metal hip resurfacing prosthesis were investigated by comparing the full model with simplified models. It was found that the orientation of the head played a very important role in the prediction of pressure distributions and film profiles of the metal-on-metal hip resurfacing prosthesis. The inclination of the hemispherical cup up to 45 had no appreciable effect on the lubrication performance of the metal-on-metal hip resurfacing prosthesis. Moreover, the combined effect of material properties and structures of bones was negligible. Future studies should focus on higher inclination angles, smaller coverage angle and microseparation related to the occurrences of edge loading. © IMechE 2012.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013, Sage Publications. 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: | Bone; Hip resurfacing arthroplasty; Lubrication analysis; Metal on metal; Orientations of cup and head |
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) |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Jan 2015 09:58 |
Last Modified: | 16 Jan 2018 06:37 |
Published Version: | http://dx.doi.org/10.1177/0954411912472845 |
Status: | Published |
Publisher: | Sage Publicatiions |
Refereed: | Yes |
Identification Number: | 10.1177/0954411912472845 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:82461 |