Biomechanical analysis of cervical spine (C2-C7) at different flexed postures
Bhanu Priya Dandumahanti1, Murali Subramaniyam1
1Department of Mechanical Engineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
The International Journal of Artificial Organs
|February 16, 2024
Summary
Prolonged neck flexion causes musculoskeletal issues. This study used finite element analysis (FEA) to analyze cervical spine (C1-C7) biomechanics, predicting intervertebral disc (IVD) and ligament stress during flexion.
Area of Science:
- Biomechanics
- Orthopedics
- Computational modeling
Background:
- Musculoskeletal diseases are linked to neck posture changes, particularly prolonged cervical flexion.
- Understanding cervical spine (C1-C7) biomechanics is crucial for assessing neck pain prevalence, causes, and risks.
Purpose of the Study:
- To predict intervertebral disc (IVD) and ligament stress values in the C2-C7 region.
- To analyze stress variations at cervical neck angles from 0° to 60° using finite element analysis (FEA).
Main Methods:
- Developed a 3D FEA model of the cervical spine (C2-C7) using computed tomography (CT) scans.
- Applied a 50 N preload compression force at the C2 vertebra apex.
- Constrained all degrees of freedom below C7.
Main Results:
- Assessed von Mises stress distribution in C2-C7 IVDs and ligaments at various flexion angles (0°, 15°, 30°, 45°, 60°).
- Validated the FEA model by comparing results with existing experimental and FEA data for physiological cervical spine motion.
Conclusions:
- The FEA model accurately simulates cervical spine biomechanics across different flexion angles.
- This research provides insights into stress distribution within the cervical spine, aiding in understanding neck pain and musculoskeletal disease mechanisms.
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