Tribologic investigation of a metacarpophalangeal prosthesis

It is the goal of this paper to introduce modern tribological investigations into the development of a new finger prosthesis, with the particular aim of optimising the material component.A new, unconstrained metacarpophalangeal prosthesis restoring the anatomy of the joint has been developed in two...

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Bibliographic Details
Published in:Der Orthopäde 2003-09, Vol.32 (9), p.784-788
Main Authors: Rieker, C B, Joyce, T, Unsworth, A, Hagena, F-W, Meuli, C
Format: Article
Language:ger
Subjects:
Equipment Failure Analysis - instrumentation
Equipment Failure Analysis - methods
Friction
Humans
Joint Diseases - rehabilitation
Joint Diseases - surgery
Joint Prosthesis
Materials Testing
Metacarpophalangeal Joint - surgery
Polyethylenes
Prosthesis Design
Prosthesis Failure
Stress, Mechanical
Surface Properties
Weight-Bearing
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Summary:It is the goal of this paper to introduce modern tribological investigations into the development of a new finger prosthesis, with the particular aim of optimising the material component.A new, unconstrained metacarpophalangeal prosthesis restoring the anatomy of the joint has been developed in two versions (UHMWPE-metal and PEEK-metal). In order to determine the version having better wear behaviour, these two versions were tested on a Joyce finger simulator. As the UHMWPE-metal version showed a lower amount of wear in vitro, this version was chosen to conduct a clinical study. This investigation showed the importance of conducting an in vitro wear test before any clinical studies. Such tests allow the optimisation of the wear behaviour of the tested metacarpophalangeal prosthesis and therefore permit a minimisation of the possible risks to the patients.
ISSN:0085-4530
DOI:10.1007/s00132-003-0523-1