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Lookup NU author(s): Professor Tom Joyce
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2023 The AuthorsAs the number of young and active individuals undergoing Total Hip Arthroplasty (THA) are increasing yearly, there is a need for hip prostheses to have increased longevity. Current investigations into the longevity of these prostheses only include walking as the patient's activity as there is limited data on the amount and intensity of other activity performed by the patient. To further understand the evolution of wear and increase the longevity of these implants, the impact of different activities on the hip prosthesis needs to be investigated. In this study, a finite element model and wear algorithm was developed to simulate both walking and bicycling over a 5-year period. The XLPE acetabular cup volumetric wear rate was found to be 33 mm3/yr while the femoral head taper wear rates were between 0.01 – 0.39 mm3/yr. The results showed that by adding bicycling of up to 80 km per week with normal walking activity, the XLPE mean volumetric wear rate increased by 67% and the metallic mean volumetric wear rate by 11%. However, the patient may gain further health benefits from this additional activity. Assistive electric bikes may also be used to further reduce the loads on the hip joint, allowing for lower amounts of wear.
Author(s): Toh SMS, Ashkanfar A, English R, Rothwell G, Langton DJ, Joyce TJ
Publication type: Article
Publication status: Published
Journal: Journal of the Mechanical Behavior of Biomedical Materials
Year: 2023
Volume: 139
Print publication date: 01/03/2023
Online publication date: 16/01/2023
Acceptance date: 07/01/2023
Date deposited: 07/02/2023
ISSN (print): 1751-6161
ISSN (electronic): 1878-0180
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.jmbbm.2023.105673
DOI: 10.1016/j.jmbbm.2023.105673
PubMed id: 36669263
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