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A metrology solution for the orthopaedic industry

Bills, Paul J., Brown, L., Jiang, Xiang and Blunt, Liam (2005) A metrology solution for the orthopaedic industry. Journal of Physics, Series 13. pp. 316-319. ISSN 1742-6596

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Abstract

Total joint replacement is one of the most common elective surgical procedures performed worldwide, with an estimate of 1.5 million operations performed annually. Currently joint replacements are expected to function for 10–15 years, however, with an increase in life expectancy, and a greater call for knee replacement due to increased activity levels, there is a requirement to improve their function to offer longer term improved quality of life for patients.

The amount of wear that a joint incurs is seen as a good indicator of performance, with higher wear rates typically leading to reduced function and premature failure. New technologies and materials are pushing traditional wear assessment methods to their limits, and novel metrology solutions are required to assess wear of joints following in vivo and in vitro use. This paper presents one such measurement technique; a scanning co-ordinate metrology machine for geometrical assessment. A case study is presented to show the application of this technology to a real orthopaedic measurement problem: the wear of components in total knee replacement.

This technique shows good results and provides a basis for further developing techniques for geometrical wear assessment of total joint replacements

Item Type: Article
Subjects: Q Science > Q Science (General)
R Medicine > RD Surgery
Q Science > QC Physics
Schools: School of Computing and Engineering
School of Computing and Engineering > Centre for Precision Technologies
School of Computing and Engineering > Centre for Precision Technologies > Surface Metrology Group
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References:

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CrossRef Link | Inspec Abstract | ChemPort Abstract | Order from Infotrieve
[4] Dowson D, McCullagh P J J and Wright V 1991 An assessment of the relative importance of wear and creep in the overall performance of load-bearing total replacement knee joints UHMWPE as a biomaterial in orthopaedic surgery eds H G Willert, G H Buchhorn and P Eyerer (Hogrefe & Huber Publishers, Germany)

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[6] 2002 Implants for surgery - Wear of total knee joint prostheses - Part 1: Loading and displacement parameters for wear-testing machines with load control and corresponding environmental conditions for test BS ISO 14243-1
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Depositing User: Briony Heyhoe
Date Deposited: 20 Mar 2008 14:35
Last Modified: 26 Nov 2010 11:58
URI: http://eprints.hud.ac.uk/id/eprint/588

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