Sensitivity of lumbar spine loading to anatomical parameters

  • 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 influence of defined geometrical parameters on lumbar spine loading utilising five parametrised musculoskeletal lumbar spine models for four different postures. The influence of the dimensions of vertebral body, disc, posterior parts of the vertebrae as well as the curvature of the lumbar spine was 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 influential. These parameters can be easily acquired from X-rays and should be used to morph a musculoskeletal lumbar spine model for subject-specific approaches with respect to bone geometry. Furthermore, the model was very sensitive to uncommon configurations and therefore, it is advised that stiffness properties of discs and ligaments should be individualised.

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Author:Michael Putzer, Ingo EhrlichORCiDGND, John Rasmussen, Norbert Gebbeken, Sebastian DendorferORCiD
Parent Title (English):Journal of Biomechanics
Publisher:Elsevier Science
Document Type:Article
Year of first Publication:2015
Release Date:2020/04/27
Tag:Lumbar spine; Musculoskeletal simulation; Parameter study; Vertebra
GND Keyword:Wirbelsäule; Belastung; Simulation
First Page:953
Last Page:958
Institutes:Fakultät Maschinenbau
Regensburg Center of Biomedical Engineering - RCBE
Technologie-Campus Neustadt an der Donau
Fakultät Maschinenbau / Labor Faserverbundtechnik (LFT)
Fakultät Maschinenbau / Labor Biomechanik (LBM)
research focus:Lebenswissenschaften und Ethik
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG