Search:
Computing and Library Services - delivering an inspiring information environment

Improvement in the assessment of wear of total knee replacements using coordinate-measuring machine techniques

Blunt, Liam, Bills, Paul J., Jiang, Xiang and Chakrabarty, G. (2008) Improvement in the assessment of wear of total knee replacements using coordinate-measuring machine techniques. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 222 (3). pp. 309-318. ISSN 0954-4119

[img]
Preview
PDF - Published Version
Download (1146kB) | Preview

    Abstract

    Total joint replacement is one of the most common elective surgical procedures performed worldwide, with an estimate of 1.5×106 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.

    Wear analysis of total joint replacements has long been an important means in determining failure mechanisms and improving longevity of these devices. The effectiveness of the coordinate-measuring machine (CMM) technique for assessing volumetric material loss during simulated life testing of a replacement knee joint has been proved previously by the present authors. The purpose of the current work is to present an improvement to this method for situations where no pre-wear data are available.

    To validate the method, simulator tests were run and gravimetric measurements taken throughout the test, such that the components measured had a known wear value. The implications of the results are then discussed in terms of assessment of joint functionality and development of standardized CMM-based product standards. The method was then expanded to allow assessment of clinically retrieved bearings so as to ascertain a measure of true clinical wear.

    Item Type: Article
    Subjects: T Technology > TJ Mechanical engineering and machinery
    R Medicine > RD Surgery
    T Technology > TA Engineering (General). Civil engineering (General)
    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
    Related URLs:
    Depositing User: Graham Stone
    Date Deposited: 29 Apr 2009 12:52
    Last Modified: 26 Nov 2010 11:07
    URI: http://eprints.hud.ac.uk/id/eprint/4085

    Document Downloads

    Downloader Countries

    More statistics for this item...

    Item control for Repository Staff only:

    View Item

    University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©