Journal
APPLIED SCIENCES-BASEL
Volume 11, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/app11073243
Keywords
vertebral fracture; posterior spinal fusion; pedicle screw; cortical screw; spinal stability; finite element analysis
Categories
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2018R1D1A1B07051376, NRF-2018R1D1A1B07051146]
- National Research Foundation of Korea (NRF) - Korean Government (MSIT) [NRF-2019R1F1A1062037]
Ask authors/readers for more resources
This study analyzed spinal stability and safety after posterior spinal fusion with different fixation methods and screw types in patients with osteoporotic thoracolumbar burst fractures. It found that the T10-T11-L1-L2 model had the lowest ROM and stress levels.
The aim of this study was to analyze the spinal stability and safety after posterior spinal fusion with various fixation segments and screw types in patients with an osteoporotic thoracolumbar burst fracture based on finite element analysis (FEA). To realize various osteoporotic vertebral fracture conditions on T12, seven cases of Young's modulus, namely 0%, 1%, 5%, 10%, 25%, 50%, and 100% of the Young's modulus, for vertebral bones under intact conditions were considered. Four types of fixation for thoracolumbar fracture on T12 (fixed with T11-L1, T10-T11-L1, T11-L1-L2, and T10-T11-L1-L2) were applied to the thoracolumbar fusion model. The following screw types were considered: pedicle screw (PS) and cortical screw (CS). Using FEA, four motions were performed on the fixed spine, and the stress applied to the screw, peri-implant bone (PIB), and intervertebral disc (IVD) and the range of motion (ROM) were calculated. The lowest ROM calculated corresponded to the T10-T11-L1-L2 model, while the closest to the intact situation was achieved in the T11-L1-L2 fixation model using PS. The lowest stress in the screw and PB was detected in the T10-T11-L1-L2 fixation model.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available