In vivo electrochemical corrosion study of a CoCrMo biomedical alloy in human synovial fluids.

Details

Serval ID
serval:BIB_604AC6E30A55
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
In vivo electrochemical corrosion study of a CoCrMo biomedical alloy in human synovial fluids.
Journal
Acta Biomaterialia
Author(s)
Igual Munoz A., Schwiesau J., Jolles B.M., Mischler S.
ISSN
1878-7568 (Electronic)
ISSN-L
1742-7061
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
21
Pages
228-236
Language
english
Notes
Publication types: Journal Article
Abstract
The present study was initiated with the aim to assess the in vivo electrochemical corrosion behaviour of CoCrMo biomedical alloys in human synovial fluids in an attempt to identify possible patient or pathology specific effects. For this, electrochemical measurements (open circuit potential OCP, polarization resistance Rp, potentiodynamic polarization curves, electrochemical impedance spectroscopy EIS) were carried out on fluids extracted from patients with different articular pathologies and prosthesis revisions. Those electrochemical measurements could be carried out with outstanding precision and signal stability. The results show that the corrosion behaviour of CoCrMo alloy in synovial fluids not only depends on material reactivity but also on the specific reactions of synovial fluid components, most likely involving reactive oxygen species. In some patients the latter were found to determine the whole cathodic and anodic electrochemical response. Depending on patients, corrosion rates varied significantly between 50 and 750mgdm(-2)year(-1).
Pubmed
Web of science
Create date
20/07/2015 9:51
Last modification date
20/08/2019 14:17
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