Biomechanical Comparison of Corticopedicular Spine Fixation versus Pedicle Screw Fixation in a Lumbar Degenerative Spondylolisthesis Finite Element Analysis Model.
Publication/Presentation Date
10-1-2024
Abstract
OBJECTIVE: To compare the stability of a corticopedicular posterior fixation (CPPF) device with traditional pedicle screws for decompression and fusion in adult degenerative lumbar spondylolisthesis.
METHODS: Finite element analysis (FEA) was used in a validated model of grade 1 L4-L5 spondylolisthesis to compare segmental stability after laminectomy alone, laminectomy with pedicle screw fixation, or laminectomy with CPPF device fixation. A 500-N follower load was applied to the model and different functional movements were simulated by applying a 7.5-Nm force in different directions. Outcomes included degrees of motion, tensile forces experienced in the CPPF device, and stresses in surrounding cortical bone.
RESULTS: At maximum loading, laminectomy alone demonstrated a 1
CONCLUSIONS: CPFF fixation demonstrated similar segmental stability to traditional pedicle screw fixation whereas tensile forces and stress in surrounding cortical bone remained below the load to failure.
Volume
190
First Page
129
Last Page
129
ISSN
1878-8769
Published In/Presented At
Farooqi, A. S., Narayanan, R., Canseco, J. A., & Vaccaro, A. R. (2024). Biomechanical Comparison of Corticopedicular Spine Fixation versus Pedicle Screw Fixation in a Lumbar Degenerative Spondylolisthesis Finite Element Analysis Model. World neurosurgery, 190, e129–e136. https://doi.org/10.1016/j.wneu.2024.07.061
Disciplines
Business Administration, Management, and Operations | Health and Medical Administration | Management Sciences and Quantitative Methods
PubMedID
39004177
Department(s)
Administration and Leadership
Document Type
Article