Loading of the lumbar spine during backpack carriage

Patrick D. Wettenschwiler, Silvio Lorenzetti, Stephen J. Ferguson, Rolf Stämpfli, Ameet K. Aiyangar, René M. Rossi and Simon Annaheim

Computer Methods in Biomechanics and Biomedical Engineering, 2017, vol. 20, issue 5, 558-565

Abstract: 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.

Date: 2017
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DOI: 10.1080/10255842.2016.1261849

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