Insights into the measurement of vertibral translation in the sagittal plane
Insights into the measurement of vertibral translation in the sagittal plane
In this discussion paper, vertebral translation in the sagittal plane is considered. A number of different measurement protocols are investigated and it is shown that, in general, the protocols lack a clear notion of the ideal. This can lead to difficulties when interpreting clinical data. One possible ideal is encapsulated in the concept of George's line, the posterior vertebral body alignment line. It is shown that translation can be measured such that deviations from George's line are quantified. Furthermore, an intrinsic centre of rotation is implied, and by considering translation in conjunction with intervertebral angle, inferences can be made regarding the position of the instantaneous centre of rotation of the joint. The relationship between static values of translation viewed on a single radiograph and changes in translation viewed across a number of images is also investigated. Results from some previous clinical studies are discussed in the light of the findings.
back pain, spinal measurements, intervertebral kinematics, vertebral translation, george's line
21-32
Muggleton, J.M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
Allen, R.
9d2d7d1d-d59d-4954-89b7-c48307a208e6
1998
Muggleton, J.M.
2298700d-8ec7-4241-828a-1a1c5c36ecb5
Allen, R.
9d2d7d1d-d59d-4954-89b7-c48307a208e6
Muggleton, J.M. and Allen, R.
(1998)
Insights into the measurement of vertibral translation in the sagittal plane.
Medical Engineering & Physics, 20 (1), .
(doi:10.1016/S1350-4533(97)00045-3).
Abstract
In this discussion paper, vertebral translation in the sagittal plane is considered. A number of different measurement protocols are investigated and it is shown that, in general, the protocols lack a clear notion of the ideal. This can lead to difficulties when interpreting clinical data. One possible ideal is encapsulated in the concept of George's line, the posterior vertebral body alignment line. It is shown that translation can be measured such that deviations from George's line are quantified. Furthermore, an intrinsic centre of rotation is implied, and by considering translation in conjunction with intervertebral angle, inferences can be made regarding the position of the instantaneous centre of rotation of the joint. The relationship between static values of translation viewed on a single radiograph and changes in translation viewed across a number of images is also investigated. Results from some previous clinical studies are discussed in the light of the findings.
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Published date: 1998
Keywords:
back pain, spinal measurements, intervertebral kinematics, vertebral translation, george's line
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Local EPrints ID: 21194
URI: http://eprints.soton.ac.uk/id/eprint/21194
ISSN: 1350-4533
PURE UUID: be628737-71b2-4af1-938a-7ab1b0f3f390
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Date deposited: 09 Nov 2006
Last modified: 15 Mar 2024 06:29
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Author:
R. Allen
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