Comparison of the results of 4 users of a contemporary CADCAM system

McGarry, T. and McHugh, B. (2007) Comparison of the results of 4 users of a contemporary CADCAM system. Prosthetics and Orthotics International, 31 (1). pp. 27-35. ISSN 0309-3646

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    Abstract

    The objective of this study was to investigate the variation of measurements recorded when four different users of the Tracer CAD system trace a model of known dimensions and volume. This complements a previous study by the same authors Mc Garry and Mc Hugh, (2005) where the accuracy and consistency of a single user was measured. Landmarks were added to indicate proximal, distal, anterior, medial and lateral regions of a specially manufactured cylindrical nylon 6.6 model. Four circumferential lines were added at regular intervals along the length of the cylinder with a view to calculating diameters and volumes relative to these landmarks. The model was measured using a comparator with guaranteed accuracy to one hundredth of a millimetre, and was traced using the Tracer CAD system by four different users. The difference in mean volume between measured results and Tracer CAD scans of differing users ranged to -3%. Individual trace volumes varied by up to -7.85%. In all volumes measured, eleven out of twelve maximum volume percentage differences measured greater than 2 %, and of these, seven results showed maximum volume percentage difference to measure greater than 4%.

    Author(s):McGarry, T. ORCID logoORCID: https://orcid.org/0000-0002-0738-5906 and McHugh, B.
    Item type:Article
    ID code:15048
    Keywords:CAD CAM, shape capture, accuracy, measurement, prosthetics, orthotics, Other systems of medicine, Engineering design, Rehabilitation, Health Professions (miscellaneous)
    Subjects:Medicine > Other systems of medicine
    Technology > Engineering (General). Civil engineering (General) > Engineering design
    Department:Faculty of Engineering > National Centre for Prosthetics and Orthotics
    Depositing user: Dr Anthony McGarry
    Date deposited:22 Jan 2010 16:42
    Last modified:07 Nov 2019 02:00
    URI:https://strathprints.strath.ac.uk/id/eprint/15048
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