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    Reliability of measurements with digital radiographs ¿ a myth.

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    Publication date
    2011
    Author
    Varghese, B.
    Muthukumar, N.
    Balasubramaniam, M.
    Scally, Andy J.
    Keyword
    Digital radiographs; Accuracy; Measuments; Templating
    Peer-Reviewed
    n/a
    
    Metadata
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    Abstract
    The purpose of this study was to assess the accuracy of digital radiographs and hence their effectiveness in templating. The methodology involved a retrospective study of post operative radiographs of patients with hemiarthroplasty of the hip. Three observers made observations blinded to each other¿s measurements. A statistical analysis of the data highlights magnification varying from 6 to 31 percent. There is a statistically significant relationship between the size of the error (size measured on radiograph minus implant size, i.e. magnification) and the implant size (p = 0.005) but the percentage error (error/implant size x 100) is independent of implant size (p = 0.505). It is our impression that digital radiographs and templating on the digital radiographs should not be considered a precise process.
    URI
    http://hdl.handle.net/10454/6369
    Version
    published version paper
    Citation
    Varghese, B., Muthukumar, N., Balasubramaniam, M. and Scally, A. (2011) Reliability of measurements with digital radiographs - a myth. Acta Orthopaedica Belgica, 77 (5), 622-5.
    Link to publisher’s version
    http://journals.sfu.ca/actaob/index.php/actaob/index
    Type
    Article
    Collections
    Health Studies Publications

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