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 51
- Downloads 0
Clinical efficacy of ultrasound-guided acupotomy combined with joint mobilization surgery in treatment of frozen shoulder
<b>Objective</b> To observe the application and clinical efficacy of ultrasound-guided acupotomy combined with joint mobilization surgery in the treatment of frozen shoulder. <b>Methods</b> One hundred and twenty pat...
Application of dual-modality ultrasound deep learning predictive model in diagnosing breast cancer
Objective To develop a predictive model using deep learning (DL) techniques based on breast ultrasound grayscale images and elastography, and to explore the diagnostic efficacy of this model in differentiating benign fro...
Predictive value of serum actinin-4, TFF1, and TGFBI for the prognosis of patients with primary hepatocellular carcinoma after transarterial chemoembolization
Objective To investigate the predictive value of serum actinin-4, trefoil factor 1 (TFF1), and transforming growth factor-β-induced protein (TGFBI) for the prognosis of patients with primary hepatocellular carcinoma (PHC...
Correlation between triglyceride glucose index and atherosclerosis
"<b>Objective</b> To explore the correlation between triglyceride glucose (TyG) index and arteriosclerosis in natural population, and whether TyG index could be used as a predictor of poor prognosis of cardio-cerebrovasc...
The relationship between serum IL-6, hs-CRP, SAA and acute lung injury in elderly patients with sepsis and their prognostic value
Objective To analyze the prognostic predictive value of combined serum interleukin-6 (IL-6), high-sensitivity C-reactive protein (hs-CRP), and amyloid A (SAA) tests in elderly patients with sepsis combined with acute lu...