Are coupled rotations in the lumbar spine largely due to the osseo-ligamentous anatomy? - A modeling study

Little, J. Paige, De Visser, Hans, Pearcy, Mark J., & Adam, Clayton J. (2008) Are coupled rotations in the lumbar spine largely due to the osseo-ligamentous anatomy? - A modeling study. Computer Methods in Biomechanics and Biomedical Engineering, 11(1), pp. 95-103.

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Prior studies have found that primary rotations in the lumbar spine are accompanied by coupled out-of-plane rotations. However, it is not clear whether these accompanying rotations are primarily due to passive (discs, ligaments, and facet joints) or active (muscles) spinal anatomy. The aim of this study was to use a finite element model of the lumbar spine to predict three-dimensional coupled rotations between the lumbar vertebrae, due to passive spinal structures alone. The finite element model was subjected to physiologically observed whole lumbar spine rotations about in vivo centres of rotation. Model predictions were validated by comparison of intra-discal pressures and primary rotations with in vivo measurements and these showed close agreement. Predicted coupled rotations matched in vivo measurements for all primary motions except lateral bending. We suggest that coupled rotations accompanying primary motions in the sagittal (flexion/extension) and transverse (axial rotation) planes are primarily due to passive spinal structures. For lateral bending the muscles most likely play a key role in the coupled rotation of the spine.

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13 citations in Scopus
12 citations in Web of Science®
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ID Code: 11140
Item Type: Journal Article
Refereed: Yes
Additional Information: The author-version of this article will be available 12 months after publication.
For more information, please refer to the journal's website (see link) or contact the author. Author contact details:
Keywords: finite element, spine, coupled motions, spinal loading
DOI: 10.1080/10255840701552143
ISSN: 1476-8259
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomechanical Engineering (090302)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2008 Taylor & Francis
Copyright Statement: First published in Computer Methods in Biomechanics and Biomedical Engineering 11(1):pp. 95-103.
Deposited On: 10 Dec 2007 00:00
Last Modified: 29 Feb 2012 13:44

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