Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7207921 | Journal of the Mechanical Behavior of Biomedical Materials | 2016 | 9 Pages |
Abstract
Results showed that the wear volume increases with the implant size and decreases with the dimensional tolerance for both the wear laws. Interestingly, different trends were obtained for the maximum wear depth vs. clearance: the best performing implants should have a high conformity according to the AR law but low conformity for the PE law. However, according to both laws, wear is highly affected by both implant size and dimensional tolerance, although it is much more sensitive to the latter, with up to a twofold variation of wear predicted. Indeed, dimensional tolerance directly alters the clearance, and therefore the lubrication and contact pressure distribution in the implant. Rather surprisingly the role of dimensional tolerance has been completely disregarded in the literature, as well as in the standards. Furthermore, this study notes some important issues for future work, such as the validation of wear laws and predictive wear models and the sensitivity of k to implant geometry.
Related Topics
Physical Sciences and Engineering
Engineering
Biomedical Engineering
Authors
Lorenza Mattei, Francesca Di Puccio, Thomas J. Joyce, Enrico Ciulli,