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The accuracy of active shape modelling and end-plate measurements for characterising the shape of the lumbar spine in the sagittal plane

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  • Ali Ali
  • Amy-beth Cowan
  • Jennifer Gregory
  • Richard Aspden
  • Judith Meakin

Abstract

The 2D shape of the lumbar spine in the sagittal plane can be determined from lordosis angles measured between the corresponding end-plates of the vertebral bodies or by using an active shape model (ASM) of the vertebral body outline. The ASM was previously shown to be a more efficient and reliable method, but its accuracy has not been assessed. The aim of this study was to determine the accuracy of an ASM for characterising lumbar spine shape and compare this to conventional measurements. Images of 25 different lumbar spine shapes were generated and measured, using both methods, by three independent observers. The accuracy of the ASM, determined from lordosis angles predicted by the model, was found to be better than conventional measurements.

Suggested Citation

  • Ali Ali & Amy-beth Cowan & Jennifer Gregory & Richard Aspden & Judith Meakin, 2012. "The accuracy of active shape modelling and end-plate measurements for characterising the shape of the lumbar spine in the sagittal plane," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 15(2), pages 167-172.
    • Handle: RePEc:taf:gcmbxx:v:15:y:2012:i:2:p:167-172
    DOI: 10.1080/10255842.2010.518962
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    Cited by:

    1. Anastasia V Pavlova & Stella G Muthuri & Rachel Cooper & Fiona R Saunders & Jennifer S Gregory & Rebecca J Barr & Kathryn R Martin & Judith E Adams & Diana Kuh & Rebecca J Hardy & Richard M Aspden, 2018. "Body mass index and waist circumference in early adulthood are associated with thoracolumbar spine shape at age 60-64: The Medical Research Council National Survey of Health and Development," PLOS ONE, Public Library of Science, vol. 13(6), pages 1-15, June.

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