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Sensitivity of lumbar spine loading to anatomical parameters

Authors :
Michael Putzer
Ingo Ehrlich
John Rasmussen
Norbert Gebbeken
Sebastian Dendorfer
Source :
Putzer, M, Ehrlich, I, Rasmussen, J, Gebbeken, N & Dendorfer, S 2016, ' Sensitivity of lumbar spine loading to anatomical parameters ', Journal of Biomechanics, vol. 49, no. 6, pp. 953-958 . https://doi.org/10.1016/j.jbiomech.2015.11.003
Publication Year :
2016
Publisher :
Elsevier BV, 2016.

Abstract

Musculoskeletal simulations of lumbar spine loading rely on a geometrical representation of the anatomy. However, this data has an inherent inaccuracy. This study evaluates the inuence of dened geometrical parameters on lumbar spine loading utilizing ve parametrized musculoskeletal lumbar spine models for four different postures. The inuence of the dimensions of vertebral body, disc, posterior parts of the vertebrae as well as the curvature of the lumbar spine were studied. Additionally, simulations with combinations of selected parameters were conducted. Changes in L4/L5 resultant joint force were used as outcome variable. Variations of the vertebral body height, disc height, transverse process width and the curvature of the lumbar spine were the most inuential. The results indicated that measuring these parameters from X-rays would be most important to morph an existing musculoskeletal lumbar spine model for a subject-specic approach with respect to bone geometry. Furthermore, degeneration processes could lead to computational problems and it is advised that stiffness properties of discs and ligaments should be individualized.

Details

ISSN :
00219290
Volume :
49
Database :
OpenAIRE
Journal :
Journal of Biomechanics
Accession number :
edsair.doi.dedup.....715ad4688265e738564cb207f1dea297
Full Text :
https://doi.org/10.1016/j.jbiomech.2015.11.003