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Lookup NU author(s): Goksu KandemirORCiD, Andrew Bowey, Dr Cyrus Jensen, Professor Tom Joyce
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2022 The Authors. Explant analyses are key to better understanding the effectiveness of medical implants in replacing natural joints. For the first time, an explanted Discocerv cervical disc was examined. The implant utilised the articulation of a caudal zirconia cup (inferior component) and a cephalic alumina head (superior component). The articulating surface of the superior alumina head had an average surface roughness of 0.016 ± 0.003 μm (Sa) and the articulating surface of the inferior zirconia cup had an average surface roughness of 0.015 ± 0.002 μm (Sa). Both articulating surfaces had negative skewness, indicating the removal of local peaks. The difference between the average surface roughness of the components was not significant (p-value: 0.741). Dark grey marks were observed on both of the articulating surfaces, which were found to be adhered titanium debris that was generated due to component impingement. This titanium debris may explain the small amount of metallosis that was reported at explantation. Some transfer of zirconium to the alumina articulating surface was also seen.
Author(s): Kandemir G, Bowey A, Jensen C, Joyce TJ
Publication type: Article
Publication status: Published
Journal: Journal of the Mechanical Behavior of Biomedical Materials
Year: 2022
Volume: 135
Print publication date: 01/11/2022
Online publication date: 22/09/2022
Acceptance date: 17/09/2022
Date deposited: 13/10/2022
ISSN (print): 1751-6161
ISSN (electronic): 1878-0180
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.jmbbm.2022.105473
DOI: 10.1016/j.jmbbm.2022.105473
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