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Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_4 | Pages 16 - 16
1 Feb 2014
Juroskova V Fulford J Barker AR Meakin JR
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Purpose of the study

To assess the ability of magnetic resonance spectroscopy (MRS) to detect changes in spinal muscle metabolism after a 4-week exercise intervention.

Background

Spinal muscle atrophy is associated with back pain and exercise interventions have been shown to reduce pain and improve function. It is not always clear, however, whether improvements are due to enhanced muscle performance or occur for other reasons (e.g. psychological, neurological). MRS can be used to measure muscle metabolism and could therefore be useful for assessing the mechanisms by which exercise improves function in back pain patients.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_4 | Pages 12 - 12
1 Feb 2014
Zanjani-Pour S Winlove CP Smith CW Meakin JR
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Purpose of the study

To incorporate magnetic resonance (MR) image data in a finite element (FE) model to estimate intervertebral disc stress as a function of posture.

Background

Determining the stresses on the intervertebral discs is important for understanding disc degeneration and developing treatment strategies. The effect of different postures on disc stress has previously been investigated through disc pressure measurements and through computational modelling. Kinematic data derived from MR images and used in an FE model may provide a non-invasive way of assessing a wide range of subjects and postures.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_4 | Pages 17 - 17
1 Feb 2014
Pavlova AV Meakin JR Cooper K Barr RJ Aspden RM
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Background and Aim

Low back pain is highly prevalent, particularly in manual occupations. We previously showed that the lumbar spine has an intrinsic shape, identifiable in lying, sitting and standing postures, that affects the spine's response to load. Its effects on motion are unknown. Here we investigate whether intrinsic spinal shape is detectable throughout a greater range of postures and its effect on how healthy adults lift a weighted box.

Methods

The lumbar spine was imaged using a positional MRI with participants (n=30) in 6 postures ranging from extension to full flexion. Active shape modelling was used to identify and quantify ‘modes’ of variation in lumbar spine shape. 3D motion capture analysed participants' motion while lifting a box (6–15 kg, self-selected).