Evaluation of the influence of atlantoaxial transverse ligament on stability of atlantoaxial complex fracture using 3D finite element method
Journal Title: Chinese Journal of Clinical Research - Year 2024, Vol 37, Issue 5
Abstract
<b>Objective</b> To analyze and compare the effects of transverse ligament injury on the stability and stress distribution of atlantoaxial complex fractures using 3D finite element method. <b>Methods</b> A male volunteer with a normal cervical spine was selected. The cranio-cervical region (C0-C3) was scanned using a 64-slice spiral CT scanner. Software such as Simpleware 3.0, Geomagic 12.0, and Hypermesh 12.0 were used to create a three-dimensional finite element model (FEM/Intact) of the C0-C3 segment. On the validated model, the anterior and posterior arches of C1 and the base of the odontoid process were fractured to create a composite fracture model (FEM/Fracture) simulating Jefferson/Type Ⅱ odontoid fracture. Two additional models were created: one with a ruptured transverse ligament of the atlas (FEM/RTL) and another with an intact transverse ligament (FEM/TL). The models were subjected to loading conditions of flexion, extension, lateral bending, and rotation, and the Von Mises stress distribution and vertebral segment motion were analyzed for each model under different loading conditions. <b>Results</b> The three-dimensional nonlinear finite element model of the atlantoaxial complex created in this study had a realistic appearance and good geometric similarity. The motion of each vertebral segment in the model was consistent with the results of Panjabi's in vitro experimental analysis. The composite fracture model of Jefferson/Type Ⅱ odontoid fracture with or without transverse ligament injury also had a realistic appearance and good geometric similarity. After combining the transverse ligament injury with the Jefferson/Type Ⅱ odontoid fracture, the instability of the upper cervical spine primarily concentrated at the atlantoaxial joint, with varying degrees of increased motion in flexion, extension, lateral bending, and axial rotation compared to the normal group.<b>Conclusion</b> Transverse ligament injury significantly affects the stability and stress distribution of atlantoaxial complex fractures. The finite element models established in this study can be used for biomechanical analysis of Jefferson/Type Ⅱ odontoid fracture combined with transverse ligament injury, and provide strong theoretical support for the selection of fixation methods in atlantoaxial complex fractures.
Authors and Affiliations
HUANG Kai, LIU Chao
Keywords
Related Articles
- EP ID EP736336
- DOI 10.13429/j.cnki.cjcr.2024.05.016
- Views 26
- Downloads 0
Endoscopic vein harvesting in coronary artery bypass grafting
<b>Objective</b> To evaluate the early clinical effect of the application of endoscopy in coronary artery bypass grafting to obtain the great saphenous vein.<b>Methods</b> A total of 262 patients with great saphenous v...
Effect of extended InterTAN intramedullary nail internal fixation on elderly femoral intertrochanteric fractures
Objective To explore the effect of extended InterTAN intramedullary nail internal fixation in the treatment of elderly femoral intertrochanteric fractures and its influence on hip function and incidence rates of complica...
Effect of sagittal imbalance of the spine on the new fracture in osteoporotic vertebral compression fractures after percutaneous kyphoplasty
<b>Objective</b> To explore the correlation between sagittal imbalance of the spine and new fractures after percutaneous kyphoplasty (PKP) in patients with osteoporotic vertebral compression fracture (OVCF), providing a...
Diagnostic value of AFP, CEA and HSP90a in primary liver cancer based on the prediction model
Objective To construct a predictive model to analyze the diagnostic value of serum alpha fetoprotein (AFP), carcinoembryonic antigen (CEA), heat shock protein 90a (Hsp90a) for primary liver cancer (PHC). Methods A retr...
Research progress on denervation in cardiovascular diseases
Denervation is closely related to many cardiovascular diseases, such as myocardial infarction, myocardial ischemia-reperfusion injury, hypertension, arrhythmia, heart failure, atherosclerosis and ventricular remodeling....