Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear

Abstract Decades of research have been dedicated to understanding the corrosion mechanisms of metal based implanted prosthetics utilized in modern surgical procedures. Focused primarily on mechanically driven wear, current fretting and crevice corrosion investigations have yet to precisely replicate...

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Autores principales:	Thomas S. Welles, Jeongmin Ahn
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b725f98361994b8dbe37757fdb5e7f26
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spelling	oai:doaj.org-article:b725f98361994b8dbe37757fdb5e7f262021-11-21T12:20:35ZDriving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear10.1038/s41598-021-01810-52045-2322https://doaj.org/article/b725f98361994b8dbe37757fdb5e7f262021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01810-5https://doaj.org/toc/2045-2322Abstract Decades of research have been dedicated to understanding the corrosion mechanisms of metal based implanted prosthetics utilized in modern surgical procedures. Focused primarily on mechanically driven wear, current fretting and crevice corrosion investigations have yet to precisely replicate the complex chemical composition of corrosion products recovered from patients’ periprosthetic tissue. This work specifically targets the creation of corrosion products at the metal on metal junction utilized in modular hip prosthetics. Moreover, this manuscript serves as an initial investigation into the potential interaction between implanted CoCrMo metal alloy and low amplitude electrical oscillation, similar in magnitude to those which may develop from ambient electromagnetic radiation. It is believed that introduction of such an electrical oscillation may be able to initiate electrochemical reactions between the metal and surrounding fluid, forming the precursor to secondary wear particles, without mechanically eroding the metal’s natural passivation layer. Here, we show that a low magnitude electrical oscillation (≤ 200 mV) in the megahertz frequency (106 Hz) range is capable of initiating corrosion on implanted CoCrMo without the addition of mechanical wear. Specifically, a 50 MHz, 200 mVpp sine wave generates corrosion products comprising of Cr, P, Ca, O, and C, which is consistent with previous literature on the analysis of failed hip prosthetics. These findings demonstrate that mechanical wear may not be required to initiate the production of chemically complex corrosion products.Thomas S. WellesJeongmin AhnNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Thomas S. Welles Jeongmin Ahn Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear
description	Abstract Decades of research have been dedicated to understanding the corrosion mechanisms of metal based implanted prosthetics utilized in modern surgical procedures. Focused primarily on mechanically driven wear, current fretting and crevice corrosion investigations have yet to precisely replicate the complex chemical composition of corrosion products recovered from patients’ periprosthetic tissue. This work specifically targets the creation of corrosion products at the metal on metal junction utilized in modular hip prosthetics. Moreover, this manuscript serves as an initial investigation into the potential interaction between implanted CoCrMo metal alloy and low amplitude electrical oscillation, similar in magnitude to those which may develop from ambient electromagnetic radiation. It is believed that introduction of such an electrical oscillation may be able to initiate electrochemical reactions between the metal and surrounding fluid, forming the precursor to secondary wear particles, without mechanically eroding the metal’s natural passivation layer. Here, we show that a low magnitude electrical oscillation (≤ 200 mV) in the megahertz frequency (106 Hz) range is capable of initiating corrosion on implanted CoCrMo without the addition of mechanical wear. Specifically, a 50 MHz, 200 mVpp sine wave generates corrosion products comprising of Cr, P, Ca, O, and C, which is consistent with previous literature on the analysis of failed hip prosthetics. These findings demonstrate that mechanical wear may not be required to initiate the production of chemically complex corrosion products.
format	article
author	Thomas S. Welles Jeongmin Ahn
author_facet	Thomas S. Welles Jeongmin Ahn
author_sort	Thomas S. Welles
title	Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear
title_short	Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear
title_full	Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear
title_fullStr	Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear
title_full_unstemmed	Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear
title_sort	driving electrochemical corrosion of implanted cocrmo metal via oscillatory electric fields without mechanical wear
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b725f98361994b8dbe37757fdb5e7f26
work_keys_str_mv	AT thomasswelles drivingelectrochemicalcorrosionofimplantedcocrmometalviaoscillatoryelectricfieldswithoutmechanicalwear AT jeongminahn drivingelectrochemicalcorrosionofimplantedcocrmometalviaoscillatoryelectricfieldswithoutmechanicalwear
_version_	1718419089404198912

Driving electrochemical corrosion of implanted CoCrMo metal via oscillatory electric fields without mechanical wear

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