scholarly journals The use of X-shaped cross-link in posterior spinal constructs improves stability in thoracolumbar burst fracture: A finite element analysis

2013 ◽  
Vol 31 (9) ◽  
pp. 1447-1454 ◽  
Author(s):  
Mina Alizadeh ◽  
Mohammed Rafiq Abdul Kadir ◽  
Miskon Mohd Fadhli ◽  
Ali Fallahiarezoodar ◽  
Baharudin Azmi ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Burst Fracture ◽  
Thoracolumbar Burst Fracture ◽  
Cross Link ◽  
Element Analysis

Finite Element Analysis of Short- Versus Long-Segment Posterior Fixation for Thoracolumbar Burst Fracture

2019 ◽  
Vol 128 ◽  
pp. e1109-e1117 ◽  
Author(s):  
Recep Basaran ◽  
Mustafa Efendioglu ◽  
Mustafa Kaksi ◽  
Talip Celik ◽  
İbrahim Mutlu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Burst Fracture ◽  
Posterior Fixation ◽  
Thoracolumbar Burst Fracture ◽  
Element Analysis

scholarly journals Numerical Evaluation of Spinal Stability after Posterior Spinal Fusion with Various Fixation Segments and Screw Types in Patients with Osteoporotic Thoracolumbar Burst Fracture Using Finite Element Analysis

2021 ◽  
Vol 11 (7) ◽  
pp. 3243
Author(s):  
Cheol-Jeong Kim ◽  
Seung Min Son ◽  
Sung Hoon Choi ◽  
Tae Sik Goh ◽  
Jung Sub Lee ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Spinal Fusion ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Burst Fracture ◽  
Posterior Spinal Fusion ◽  
Spinal Stability ◽  
Thoracolumbar Burst Fracture ◽  
Element Analysis

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.

scholarly journals Finite Element Analysis of a Novel Anterior Locking Plate for Thoracolumbar Burst Fracture

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Pengcheng Ren ◽  
Xiaodong Cheng ◽  
Chongyao Lu ◽  
Haotian Wu ◽  
Shuangquan Yao ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Maximum Stress ◽  
Locking Plate ◽  
Burst Fracture ◽  
The Novel ◽  
Thoracolumbar Burst Fracture ◽  
Biomechanical Stability ◽  
Element Analysis ◽  
Model C

Purpose. The finite element analysis method was used to explore the biomechanical stability of a novel locking plate for thoracolumbar burst fracture fusion fixation. Methods. The thoracolumbar CT imaging data from a normal volunteer was imported into finite software to build a normal model and three different simulated surgical models (the traditional double-segment fixation model A, the novel double-segment fixation model B, and the novel single-segment fixation model C). An axial pressure (500 N) and a torque (10 Nm) were exerted on the end plate of T12 to simulate activity of the spine. We recorded the range of motion (ROM) and the maximum stress value of the simulated cages and internal fixations. Results. Model A has a larger ROM in all directions than model B (flexion 5.63%, extension 38.21%, left rotation 46.51%, right rotation 39.76%, left bending 9.45%, and right bending 11.45%). Model C also has a larger ROM in all directions than model B (flexion 555.63%, extension 51.42%, left rotation 56.98%, right rotation 55.42%, left bending 65.67%, and right bending 59.47%). The maximum stress of the cage in model A is smaller than that in model B except for the extension direction (flexion 96.81%, left rotation 175.96%, right rotation 265.73%, left bending 73.73%, and right bending 171.28%). The maximum stress value of the internal fixation in model A is greater than that in model B when models move in flexion (20.23%), extension (117.43%), and left rotation (21.34%). Conclusion. The novel locking plate has a smaller structure and better performance in biomechanical stability, which may be more compatible with minimally invasive spinal tubular technology.

scholarly journals The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Jifeng Liu ◽  
Sheng Yang ◽  
Fei Zhou ◽  
Jianmin Lu ◽  
Chunyang Xia ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bone Defect ◽  
Burst Fracture ◽  
Lateral Bending ◽  
Short Segment ◽  
Element Analysis ◽  
Flexion Extension ◽  
Screw Breakage ◽  
Defect Area

Abstract Background To evaluate the biomechanical properties of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture using a finite element analysis. Methods The Universal Spine System (USS) fixation model for adjacent upper and lower vertebrae (T12 and L2) of lumbar 1 vertebra burst fracture was established. During flexion/extension, lateral bending, and rotation, the screw stress and the displacement of bone defect area of the injured vertebrae were evaluated when the downward inserted angle between the long axis of the screws and superior endplate of the adjacent vertebrae was set to 0° (group A), 5° (group B), 10° (group C), and 15°(group D). There were 6 models in each group. Results There were no significant differences in the maximum screw stress among all the groups during flexion/extension, lateral bending, and rotation (P > 0.05). There were no significant differences in the maximum displacement of the bone defect area of the injured vertebrae among all the groups during flexion/extension, lateral bending, and rotation (P > 0.05). Conclusion Short-segment Schanz screw implanted in an oblique downward direction with different angles (0°/parellel, 5°, 10°, and 15°) did not change the maximum stress of the screws, and there was a lower risk of screw breakage in all groups during flexion/extension, lateral bending, and rotation. In addition, the displacement of the injured vertebra defect area had no significant changes with the change of angles.

scholarly journals Correction to: The feasibility of short-segment Schanz screw implanted in an oblique downward direction for the treatment of lumbar 1 burst fracture: a finite element analysis

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Jifeng Liu ◽  
Sheng Yang ◽  
Fei Zhou ◽  
Jianmin Lu ◽  
Chunyang Xia ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Burst Fracture ◽  
Short Segment ◽  
Element Analysis

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