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Accurate simulation of the herniated cervical intervertebral disc using controllable expansion: a finite element
Dong Liang1, Guan-Jun Tu1, Ya-Xin Han1
1Department of Orthopedics Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China.
Computer Methods in Biomechanics and Biomedical Engineering
|December 17, 2020
Summary
Finite element models simulated disc herniations, revealing how bulging discs compress the spinal cord. Spinal cord deformation and stress increase with compression extent, aiding research into cervical spondylotic myelopathy.
Area of Science:
- Biomedical Engineering
- Computational Mechanics
- Neurosurgery
Background:
- Cervical spondylotic myelopathy is a debilitating spinal cord condition.
- Accurate biomechanical models are crucial for understanding spinal cord compression.
- Finite element analysis offers a powerful tool for simulating complex biological structures.
Purpose of the Study:
- To develop and analyze finite element models of various disc herniation types.
- To investigate the biomechanical effects of disc bulging on the spinal cord.
- To explore the potential of these models for researching cervical spondylotic myelopathy.
Main Methods:
- Creation of finite element (FE) models simulating symmetric and asymmetric disc herniations.
- Application of linear compression to anterior spinal cord sections in the models.
- Analysis of geometric deformation and stress distribution within the spinal cord.
Main Results:
- Lubricous disk bulging consistently compressed the anterior spinal cord.
- The shape and location of disc protrusions varied based on temperature, magnitude, and element placement.
- Increased compression extent led to greater spinal cord deformation and stress.
Conclusions:
- Finite element modeling effectively simulates spinal cord compression due to disc herniation.
- Model parameters influence the characteristics of disc protrusions and their impact.
- This approach holds significant potential for advancing individualized research in cervical spondylotic myelopathy.
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