The study of pediatric spine has been limited due to few experimental and numerical studies. The geometry and the material properties for the pediatric spine are age-specific. The current study develops an anatomially accurate finite element model (FEM) of a (T2/S1 thoracolumbar spine from an 8-year-old’s CT scan. The FEM model has to be validated to study the collapse pattern of a juvenile spine due to discitis. Hence the present model was scaled up to 141% to represent an adult model and adult moment loads were applied. Buckling studies and flexion bending moment were applied on the intact 8-year-old’s spine and for the two stages of discitis. The flexion-extension and lateral bending on the 141% model was found comparable at various levels with the literature. The buckling analysis found the 8-year-old’s model to behave as a straight slender column as curvatures are less defined. The buckling load for the pediatric model was 13.45N and 5N for the extreme discitis model. The flexion study found minimum disruptions in the initial infection but when the disc becomes puss like, the bending stiffness at the infected level reduces drastically leading to high angulations, and a significant degree of disruptions are observed at other locations.
Finite Element Study of Collapse of Pediatric Spine Due to Tuberculosis of Spine
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Jebaraj, C, Jebaseelan, DD, Rajasekaran, S, & Yoganandan, N. "Finite Element Study of Collapse of Pediatric Spine Due to Tuberculosis of Spine." Proceedings of the ASME 2010 International Mechanical Engineering Congress and Exposition. Volume 2: Biomedical and Biotechnology Engineering. Vancouver, British Columbia, Canada. November 12–18, 2010. pp. 373-379. ASME. https://doi.org/10.1115/IMECE2010-38678
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