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    Effects of different technical coordinate system definitions on the three dimensional representation of the glenohumeral joint centre

    Access Status
    Fulltext not available
    Authors
    Campbell, Amity
    Alderson, J.
    Lloyd, D.
    Elliott, B.
    Date
    2009
    Type
    Journal Article
    
    Metadata
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    Citation
    Campbell, A. and Alderson, J. and Lloyd, D. and Elliott, B. 2009. Effects of different technical coordinate system definitions on the three dimensional representation of the glenohumeral joint centre. Medical and Biological Engineering and Computing. 47 (5 SPEC. ISS.): pp. 543-550.
    Source Title
    Medical and Biological Engineering and Computing
    DOI
    10.1007/s11517-009-0467-7
    ISSN
    0140-0118
    School
    School of Physiotherapy and Exercise Science
    URI
    http://hdl.handle.net/20.500.11937/18972
    Collection
    • Curtin Research Publications
    Abstract

    This study aimed to find the most appropriate marker location, or combination thereof, for the centre of the humeral head (Wang et al. in J Biomech 31: 899-908, 1998) location representation during humeral motion. Ten male participants underwent three MRI scans in three different humeral postures. Seven technical coordinate systems (TCS) were defined from various combinations of an acromion, distal upper arm and proximal upper arm clusters of markers in a custom Matlab program. The CHH location was transformed between postures and then compared with the original MRI CHH location. The results demonstrated that following the performance of two near 180° humeral elevations, a combined acromion TCS and proximal upper arm TCS produced an average error of 23 ± 9 mm, and 18 ± 4 mm, which was significantly smaller (p < 0.01) than any other TCS. A combination of acromion and proximal upper arm TCSs should therefore be used to reference the CHH location when analysing movements incorporating large ranges of shoulder motion. © International Federation for Medical and Biological Engineering 2009.

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