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

Paper ID Volume ID Publish Year Pages File Format Full-Text
306 23 2015 9 PDF Available
Title
In vivo electrochemical corrosion study of a CoCrMo biomedical alloy in human synovial fluids
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 750 mg dm−2 year−1.

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Keywords
Human synovia; Corrosion; Electrochemistry; CoCrMo alloy; Knee implants
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In vivo electrochemical corrosion study of a CoCrMo biomedical alloy in human synovial fluids
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 21, 15 July 2015, Pages 228–236
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us