强直性脊柱炎椎骨去松质骨化截骨术后钛棒有限元分析

doi:10.16098/j.issn.0529-1356.2024.03.012

解剖学报 ›› 2024, Vol. 55 ›› Issue (3): 339-344.doi: 10.16098/j.issn.0529-1356.2024.03.012

强直性脊柱炎椎骨去松质骨化截骨术后钛棒有限元分析

苏宝科1 王永清¹ 康志杰² 王海燕³ 金凤⁴ 李筱贺^3* 曹振华^5,6,7 霍佳萱⁸ 祝勇⁹ 李峰^6*

1.内蒙古自治区中医医院(内蒙古医科大学中医附属医院)急诊科，呼和浩特 010000; 2.内蒙古医科大学研究生院，呼和浩特 010000; 3.内蒙古医科大学基础医学院人体解剖学教研室，呼和浩特 010000; 4.内蒙古医科大学附属医院影像科，呼和浩特 010000; 5.锦州医科大学第三附属院骨科，辽宁锦州 121000; 6.内蒙古医科大学第二附属医院脊柱外科，呼和浩特 010000; 7.中国人民解放军总医院脊柱外科，北京 100000; 8.内蒙古医科大学第一临床医学院，呼和浩特 010000; 9.北京大学肿瘤医院内蒙古医院（内蒙古医科大学附属肿瘤医院）,内蒙古癌症中心，呼和浩特 010000

收稿日期:2023-04-11 修回日期:2023-05-16 出版日期:2024-06-06 发布日期:2024-06-11
通讯作者: 李筱贺;李峰 E-mail:798242742@qq.com
基金资助:
2022年度自治区卫生健康科技计划项目;内蒙古自治区自然科学基金项目;内蒙古医科大学2020年度“成果转化”项目;内蒙古医科大学重点项目;自治区高等学校创新团队发展计划项目;内蒙古自然科学基金;内蒙古自治区“草原英才”工程青年创新创业人才项目;内蒙古医科大学后续科研项目;内蒙古科技计划项目;2021年内蒙古自治区蒙医药协同创新中心科学研究项目

Finite element analysis of titanium rods after vertebral column decancellation osteotomy for ankylosing spondylitis

SU Bao-ke¹ WANG Yong-qing¹ KANG Zhi-jie² WANG Hai-yan³ JIN Feng⁴ LI Xiao-he^3* CAO Zhen-hua^5,6,7 HUO Jia-xuan⁸ ZHU Yong⁹ LI Feng⁶ #br#

#br#

1. Department of Emergency, Traditional Chinese Medicine Hospital of Inner Mongolia Autonomous Region, Hohhot 010000, China; 2.Graduate School of Inner Mongolia Medical University, Hohhot 010000, China; 3.Department of Human Anatomy，School of Basic Medicine, Inner Mongolia Medical University, Hohhot 010000, China; 4.Department of Imaging, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, China; 5.Department of Orthopaedics, the Third Affiliated Hospital of Jinzhou Medical University, Liaoning Jinzhou 121000, China; 6.Department of Spinal Surgery, the Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010000, China; 7.Department of Spinal Surgery, General Hospital of the People’s Liberation Army of China, Beijing 100000, China; 8.First Clinical College of Medicine, Inner Mongolia Medical University, Hohhot 010010, China; 9.Inner Mongolia Cancer Hospital (Affiliated Cancer Hospital of Inner Mongolia Medical University) and Inner Mongolia Cancer Center, Peking University Cancer Hospital, Hohhot 010010, China

Received:2023-04-11 Revised:2023-05-16 Online:2024-06-06 Published:2024-06-11
Contact: LI Xiao-he;LI Feng E-mail:798242742@qq.com

摘要/Abstract

摘要： 目的通过对去松质骨化(VCD)截骨术后强直性脊柱炎患者胸椎（T）₁₁~骶骨（S）节段钛棒应力变化分析，为术前钛棒选择、改进提供参考。方法将VCD截骨术后强直性脊柱炎患者连续扫描的断层影像原始数据以DICOM格式导入Mimics 21.0软件，分别重建T₁₁~ S、螺钉和钛棒，导入到3-Matic建立初步几何模型，进行去噪、铺面、平滑等处理，完善后的模型导入Hypermesh10软件进行网格划分，对材料进行属性赋值后导入ANSYS 19.2中显示有限元模型，设定边界和载荷条件，测量螺钉与钛棒连接处应力值。结果在中立位、前屈、侧向弯曲、轴向旋转工况下，钛棒在上端椎（T₁₁）应力最大，顶椎（L₃）应力最小；在后伸工况下，钛棒在下端椎（L₅）应力最大。结论在上、下端椎可考虑增粗钛棒直径，增强钛棒硬度，或改为双棒。

关键词: 强直性脊柱炎, 螺钉, 钛棒, 矫形后, 有限元分析, 人

Abstract:

Objective To analyze the stress changes of thoracic vertebra (T)11-sacrum (S) titanium rods in patients with ankylosing spondylitis after vertebral column decancellation (VCD) osteotomy, and provide reference for the selection and improvement of titanium rods before surgery. Methods The original data of the continuous scanning tomographic images of patients with ankylosing spondylitis after VCD osteotomy were imported into Mimics 21.0 in DICOM format, and T₁₁-S vertebrae, screws and titanium rods were respectively reconstructed. They were imported into 3-Matic to establish a preliminary geometric modeling, and then processed with noise removal, paving, smoothing, etc. The improved model was imported into Hypermesh 10 software for grid division, and the material was imported into ANSYS 19.2 to display the finite element model after attribute assignment, Set the boundary and load conditions, and measure the stress value at the connection between the screw and the titanium rod. Results Under neutral position, forward bending, lateral bending, and axial rotation conditions, the titanium rod had the highest stress at the upper vertebrae (T₁₁) and the lowest stress at the top vertebrae (L₃); Under the backward extension condition, the titanium rod has the highest stress at the lower end vertebra (L₅). Conclusion In the upper and lower vertebrae, it is possible to consider increasing the diameter of the titanium rod, enhancing its hardness, or changing it to a double rod.

Key words: Ankylosing spondylitis, Titanium nail, Titanium rod, After orthopedics, Finite element analysis, Human

中图分类号:

苏宝科王永清康志杰王海燕金凤李筱贺曹振华霍佳萱祝勇李峰 . 强直性脊柱炎椎骨去松质骨化截骨术后钛棒有限元分析[J]. 解剖学报, 2024, 55(3): 339-344.

SU Bao-ke WANG Yong-qing KANG Zhi-jie WANG Hai-yan JIN Feng LI Xiao-he CAO Zhen-hua HUO Jia-xuan ZHU Yong LI Feng. Finite element analysis of titanium rods after vertebral column decancellation osteotomy for ankylosing spondylitis[J]. Acta Anatomica Sinica, 2024, 55(3): 339-344.

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强直性脊柱炎椎骨去松质骨化截骨术后钛棒有限元分析

Finite element analysis of titanium rods after vertebral column decancellation osteotomy for ankylosing spondylitis

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