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A Female Ligamentous Cervical Spine Finite Element Model Validated for Physiological Loads
Chalmers Tekniska Högskola.
Chalmers Tekniska Högskola.
Chalmers Tekniska Högskola.
Swedish National Road and Transport Research Institute, Traffic and road users, Traffic safety, society and road-user.
2016 (English)In: Journal of Biomechanical Engineering, ISSN 0148-0731, E-ISSN 1528-8951, Vol. 138, no 6, 061005Article in journal (Refereed) Published
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Text
Abstract [en]

Mathematical cervical spine models allow for studying of impact loading that can cause whiplash associated disorders (WAD). However, existing models only cover the male anthropometry, despite the female population being at a higher risk of sustaining WAD in automotive rear-end impacts. The aim of this study is to develop and validate a ligamentous cervical spine intended for biomechanical research on the effect of automotive impacts. A female model has the potential to aid the design of better protection systems as well as improve understanding of injury mechanisms causing WAD. A finite element (FE) mesh was created from surface data of the cervical vertebrae of a 26-year old female (stature 167 cm, weight 59 kg). Soft tissues were generated from the skeletal geometry and anatomical literature descriptions. Ligaments were modeled with nonlinear elastic orthotropic membrane elements, intervertebral disks as composites of nonlinear elastic bulk elements, and orthotropic anulus fibrosus fiber layers, while cortical and trabecular bones were modeled as isotropic plastic-elastic. The model has geometrical features representative of the female cervical spine-the largest average difference compared with published anthropometric female data was the vertebral body depth being 3.4% shorter for the model. The majority the cervical segments compare well with respect to biomechanical data at physiological loads, with the best match for flexion-extension loads and less biofidelity for axial rotation. An average female FE ligamentous cervical spine model was developed and validated with respect to physiological loading. In flexion-extension simulations with the developed female model and an existing average male cervical spine model, a greater range of motion (ROM) was found in the female model.

Place, publisher, year, edition, pages
2016. Vol. 138, no 6, 061005
Keyword [en]
Cervical vertebrae, Mathematical model, Injury, Finite element method, Woman, Biomechanics
National Category
Medical Engineering Applied Mechanics
Research subject
80 Road: Traffic safety and accidents, 85 Road: Personal injuries
Identifiers
URN: urn:nbn:se:vti:diva-10753DOI: 10.1115/1.4032966ISI: 000378259500005PubMedID: 26974520Scopus ID: 2-s2.0-84971554424OAI: oai:DiVA.org:vti-10753DiVA: diva2:948733
Available from: 2016-07-13 Created: 2016-07-13 Last updated: 2016-08-09Bibliographically approved

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