A comprehensive finite element model of surgical treatment for cervical myelopathy.

Clinical Biomechanics
Kirsten E StonerNicole M Grosland

Abstract

Cervical myelopathy is a common and debilitating chronic spinal cord dysfunction. Treatment includes anterior and/or posterior surgical intervention to decompress the spinal cord and stabilize the spine, but no consensus has been made as to the preferable surgical intervention. The objective of this study was to develop an finite element model of the healthy and myelopathic C2-T1 cervical spine and common anterior and posterior decompression techniques to determine how spinal cord stress and strain is altered in healthy and diseased states. A finite element model of the C2-T1 cervical spine, spinal cord, pia, dura, cerebral spinal fluid, and neural ligaments was developed and validated against in vivo human displacement data. To model cervical myelopathy, disc herniation and osteophytes were created at the C4-C6 levels. Three common surgical interventions were then incorporated at these levels. The finite element model accurately predicted healthy and myelopathic spinal cord displacement compared to motions observed in vivo. Spinal cord strain increased during extension in the cervical myelopathy finite element model. All surgical techniques affected spinal cord stress and strain. Specifically, adjacent levels had increased str...Continue Reading

Citations

Jan 5, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Patrice SudresYvan Petit
Aug 28, 2021·Journal of Functional Biomaterials·Symeon NaoumKonstantinos Katakalos
Aug 10, 2021·Journal of Biomechanical Engineering·Marie-Hélène BeauséjourYvan Petit

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