Title |
Are asymmetric metal markings on the cone surface of ceramic femoral heads an indication of entrapped debris?
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Published in |
BioMedical Engineering OnLine, April 2014
|
DOI | 10.1186/1475-925x-13-38 |
Pubmed ID | |
Authors |
Sebastian Valet, Bernhard Weisse, Jakob Kuebler, Martin Zimmermann, Christian Affolter, Giovanni Pietro Terrasi |
Abstract |
The probability of in vivo failure of ceramic hip joint implants is very low (0.004-0.05%). In addition to material flaws and overloading, improper handling during implantation can induce fractures of the ceramic ball head in the long term. Identifying the causes of an in vivo fracture contributes to improved understanding and potentially to further reduction of the fracture probability for patients. Asymmetric metal markings on the cone surface of in vivo ball head fractures have been reported. The question, therefore, is whether asymmetric loading is the sole cause or whether additional factors, specifically contamination entrapped in the taper fit, also contribute or are even the main cause. |
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