MRI development and validation of two new predictive methods of glenohumeral joint centre location identification and comparison with established techniques

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Title MRI development and validation of two new predictive methods of glenohumeral joint centre location identification and comparison with established techniques
Author Campbell, A.C.; Lloyd, David Gavin; Alderson, J.A.; Elliott, B.C.
Journal Name Journal of Biomechanics
Year Published 2009
Place of publication United Kingdom
Publisher Elsevier
Abstract Identification of the centre of the glenohumeral joint (GHJ) is essential for three-dimensional (3D) upper limb motion analysis. A number of convenient, yet un-validated methods are routinely used to estimate the GHJ location in preference to the International Society of Biomechanics (ISB) recommended methods. The current study developed a new regression model, and simple 3D offset method for GHJ location estimation, employing easy to administer measures, and compared the estimates with the known GHJ location measured with magnetic resonance imaging (MRI). The accuracy and reliability of the new regression and simple 3D offset techniques were compared with six established predictive methods. Twenty subjects wore a 3D motion analysis marker set that was also visible in MRI. Immediately following imaging, they underwent 3D motion analysis acquisition. The GHJ and anatomical landmark positions of 15 participants were used to determine the new regression and simple 3D generic offset methods. These were compared for accuracy with six established methods using 10 subject's data. A cross validation on 5 participants not used for regression model development was also performed. Finally, 10 participants underwent a further two MRI's and subsequent 3D motion analysis analyses for inter-tester and intra-tester reliability quantification. When compared with any of the other established methods, our newly developed regression model found an average GHJ location closer to the actual MRI location, having an GHJ location error of 13±2 mm, and had significantly lower inter-tester reliability error, 6±4 mm (p<0.01).
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1016/j.jbiomech.2009.03.039
Volume 42
Issue Number 10
Page from 1527
Page to 1532
ISSN 0021-9290
Date Accessioned 2011-03-30
Date Available 2011-08-19T06:43:39Z
Language en_AU
Research Centre Centre for Musculoskeletal Research
Faculty Griffith Health Faculty
Subject Biomechanics
URI http://hdl.handle.net/10072/40117
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1x

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