학술논문
Quantitative Biomechanical Evaluation for Optimal Spinal Instrumentation to Prevent Mechanical Complications in Spinal Fusion from the Lower Thoracic Spine to the Pelvis for Adult Spinal Deformity: A Finite Element Analysis
Document Type
Journal Article
Author
Source
Spine Surgery and Related Research. 2023, 7(3):276
Subject
Language
English
ISSN
2432-261X
Abstract
Results: Changing the rod material from titanium alloy (Ti) to cobalt chrome (CoCr) decreased shearing stress at L5-S1 by 11.5%, and adding ARs decreased it by up to 34.3% (for the shortest ARs). Although the trajectory (straightforward vs. anatomical) of PSs did not affect the fracture load for UIV+1, changing the anchor from PSs to hooks at the UIV reduced it by 14.8%. Changing the rod material from Ti to CoCr did not alter the load, whereas the load decreased by up to 25.1% as the AR became longer.