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Hip joint centre localization: Evaluation on normal subjects in the context of gait analysis

Sangeux, M, Peters, A and Baker, RJ 2011, 'Hip joint centre localization: Evaluation on normal subjects in the context of gait analysis' , Gait & Posture, 34 (3) , pp. 324-328.

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    Abstract

    Locating the position of the hip joint centre (HJC) is an important part of lower limb modeling for gait analysis. Regression equations have been used in the past but a range of functional calibration methods are now available. This study compared the accuracy of HJC localization from two sets of regression equations and five different functional calibration methods against three dimensional ultrasound (3- DUS) on a population of 19 able bodied subjects. Results show that the geometric sphere fitting technique was the best performer with mean absolute distance error of 15 mm and 85% of measurements being within 20 mm. The results also show that widely used regression equations perform particularly badly whereas the most recent equations performed very closely to the best functional method with a mean absolute error of 16 mm and 88% of measurements being within 20 mm. In vivo results are more than an order of magnitude worse than predictions using synthetic data suggesting that additional work is required before soft tissue artifact can be effectively modelled.

    Item Type: Article
    Themes: Health and Wellbeing
    Schools: Colleges and Schools > College of Health & Social Care
    Colleges and Schools > College of Health & Social Care > School of Health Sciences > Centre for Health Sciences Research
    Colleges and Schools > College of Health & Social Care > School of Health Sciences
    Journal or Publication Title: Gait & Posture
    Publisher: Elsevier
    Refereed: Yes
    ISSN: 09666362
    Depositing User: RH Shuttleworth
    Date Deposited: 22 May 2012 10:06
    Last Modified: 23 Sep 2013 10:56
    URI: http://usir.salford.ac.uk/id/eprint/22751

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