Loading of the lumbar spine during backpack carriage

Backpack carriage is significantly associated with a higher prevalence of low back pain. Elevated compression and shear forces in the lumbar intervertebral discs are known risk factors. A novel method of calculating the loads in the lumbar spine during backpack carriage is presented by combining phy...

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Bibliographic Details
Published in:Computer methods in biomechanics and biomedical engineering 2017-04, Vol.20 (5), p.558-565
Main Authors: Wettenschwiler, Patrick D., Lorenzetti, Silvio, Ferguson, Stephen J., Stämpfli, Rolf, Aiyangar, Ameet K., Rossi, René M., Annaheim, Simon
Format: Article
Language:English
Subjects:
Adult
backpack carriage
Biomechanical Phenomena
Compression
Compressive Strength
Curvature
Humans
Intervertebral Disc - physiology
Intervertebral discs
Joints - physiology
Loads (forces)
Low back pain
Lumbar compression
lumbar curvature
lumbar shear
Lumbar Vertebrae - physiology
Magnetic Resonance Imaging
Male
Mathematical models
Pain
Pressure
Rigid-body dynamics
Risk analysis
Risk factors
Spine
Spine (lumbar)
Weight-Bearing
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Summary:Backpack carriage is significantly associated with a higher prevalence of low back pain. Elevated compression and shear forces in the lumbar intervertebral discs are known risk factors. A novel method of calculating the loads in the lumbar spine during backpack carriage is presented by combining physical and numerical modelling. The results revealed that to predict realistic lumbar compression forces, subject-specific lumbar curvature data were not necessary for loads up to 40 kg. In contrast, regarding shear forces, using subject-specific lumbar curvature data from upright MRI measurements as input for the rigid body model significantly altered lumbar joint force estimates.
ISSN:1025-5842
1476-8259
DOI:10.1080/10255842.2016.1261849