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Analysis of failed Van Straten LPM proximal interphalangeal prostheses

Lookup NU author(s): Dr Martin Bone, Professor Tom Joyce

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Abstract

The two-piece Van Straten Leuwen Poeschmann Metal (LPM) prosthesis was intended for the proximal interphalangeal joints. However, revision rates of 29% after 19 months were reported, as well as massive osteolysis. Five failed LPM titanium–niobium coated cobalt chromium components were obtained, three distal and two proximal, and subjected to a forensic retrieval analysis. Components were analyzed using a Talysurf contacting profilometer, ZYGO noncontacting profilometer, and environmental-scanning electron microscope. All components were heavily worn. In some regions the titanium–niobium coating had been scratched and penetrated. Elsewhere this coating had been removed where there was minimal scratching, which may have been due to corrosion between the coating and substrate. The osteolysis reported clinically was likely to be linked to the wear debris from the failed titanium–niobium coating and substrate.


Publication metadata

Author(s): Bone MC, Cunningham JL, Lord J, Giddins G, Field J, Joyce TJ

Publication type: Article

Publication status: Published

Journal: Journal of Hand Surgery (European Volume)

Year: 2013

Volume: 38

Issue: 3

Pages: 313-320

Print publication date: 18/09/2012

ISSN (print): 1753-1934

ISSN (electronic): 2043-6289

Publisher: Sage Publications Ltd.

URL: http://dx.doi.org/10.1177/1753193412460627

DOI: 10.1177/1753193412460627


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