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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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.
|Themes:||Health and Wellbeing|
|Schools:||Schools > School of Health Sciences > Centre for Health Sciences Research
Schools > School of Health Sciences
|Journal or Publication Title:||Gait & Posture|
|Depositing User:||RH Shuttleworth|
|Date Deposited:||22 May 2012 09:06|
|Last Modified:||30 Nov 2015 23:45|
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