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A Tissue Displacement-based Contusive Spinal Cord Injury Model in Mice
Published on: June 18, 2017
The importance of fluid-structure interaction in spinal trauma models
Cecilia Persson1, Jon Summers, Richard M Hall
1School of Mechanical Engineering, University of Leeds, Leeds, United Kingdom. cecilia.persson@angstrom.uu.se
Journal of Neurotrauma
|November 5, 2010
Summary
The cerebrospinal fluid significantly impacts spinal cord injury deformation, contrary to previous assumptions. Including cerebrospinal fluid in models is crucial for accurate spinal cord injury research.
Area of Science:
- Biomechanics
- Neuroscience
- Computational Modeling
Background:
- Spinal cord injury (SCI) severity is linked to initial mechanical insult.
- Cerebrospinal fluid (CSF) shows protective properties in vitro, but its role in SCI biomechanics is unclear.
- Detailed cord-column interaction during impact lacks comprehensive understanding.
Purpose of the Study:
- To computationally model spinal cord injury to clarify the role of CSF.
- To provide a detailed visualization of cord-column interaction during mechanical insult.
- To validate the computational model against in vitro experimental data.
Main Methods:
- Development of a computational model simulating spinal cord injury.
- Validation of the model using an in vitro study on bovine tissue.
- Analysis of the influence of dura mater and CSF on spinal cord deformation.
Main Results:
- Computational model contradicted prior assumptions of complete subdural collapse before cord deformation.
- Both dura mater and CSF significantly reduced longitudinal strains within the spinal cord.
- Spinal cord's white and grey matter division had minimal impact on bone fragment trajectory.
Conclusions:
- Cerebrospinal fluid plays a significant role in spinal cord deformation patterns during impact.
- Future computational models of spinal cord injury should incorporate cerebrospinal fluid.
- Material models for spinal cord and dura mater influence stress/strain but not fragment trajectory significantly.
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