中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (30): 4783-4787.doi: 10.12307/2024.627

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

青少年特发性脊柱侧弯全脊柱的有限元模态分析

张玉芳1,李  帅2,刘  宁1,郭海伟1,齐晓华1,吕  蒙1   

  1. 1郑州铁路职业技术学院,河南省郑州市   450000;2中原工学院,河南省郑州市   450000
  • 收稿日期:2023-07-26 接受日期:2023-09-04 出版日期:2024-10-28 发布日期:2023-12-25
  • 通讯作者: 李帅,博士,讲师,中原工学院,河南省郑州市 450000
  • 作者简介:张玉芳,女,1990年生,汉族,2021年大连交通大学毕业,博士,讲师,主要从事脊柱侧弯矫形器设计制造方面的研究。
  • 基金资助:
    河南省高等学校重点科研项目(23A460032),项目负责人:张玉芳;2022年郑州铁路职业技术学院科研项目(2022KY001),项目负责人:张玉芳

Finite element modal analysis of whole spine in adolescent idiopathic scoliosis

Zhang Yufang1, Li Shuai2, Liu Ning1, Guo Haiwei1, Qi Xiaohua1, Lyu Meng1   

  1. 1Zhengzhou Railway Vocational and Technical College, Zhengzhou 450000, Henan Province, China; 2Zhongyuan University of Technology, Zhengzhou 450000, Henan Province, China
  • Received:2023-07-26 Accepted:2023-09-04 Online:2024-10-28 Published:2023-12-25
  • Contact: Li Shuai, MD, Lecturer, Zhongyuan University of Technology, Zhengzhou 450000, Henan Province, China
  • About author:Zhang Yufang, MD, Lecturer, Zhengzhou Railway Vocational and Technical College, Zhengzhou 450000, Henan Province, China
  • Supported by:
    Key Research Project of Higher Education Institutions in Henan Province, No. 23A460032 (to ZYF); 2022 Zhengzhou Railway Vocational and Technical College Research Project, No. 2022KY001 (to ZYF)

摘要:


文题释义:

青少年特发性脊柱侧弯:一种脊柱三维空间结构性畸形,其发病原因不明。
模态分析:是一种研究结构动力特性的方法。模态是指所研究结构的固有振动特性,每一个模态都有特定的固有频率、阻尼比和模态
振型。


背景:人体处于振动环境时,会引起脊柱损伤,特别是脊柱侧弯患者,目前尚未涉及脊柱侧弯患者T1-骨盆全脊柱在自由状态下的固有模态信息。

目的:利用有限元方法分析脊柱侧弯患者全脊柱的动力学特性。
方法:基于CT扫描图像建立1例11岁胸腰双弯脊柱侧弯患者T1-骨盆全脊柱三维有限元模型,胸腰段侧弯Cobb角分别为36°和24°,利用有限元方法进行全脊柱自由状态下的模态分析。

结果与结论:提取脊柱的15阶自由模态,获得侧弯全脊柱的动态特性:脊柱共振频率分布集中,胸椎段为全脊柱模型变形最严重的椎段,胸弯曲椎体比腰弯曲椎体振幅大。模态分析脊柱侧弯患者处于振动环境中的振动特性,确定侧弯脊柱的固有频率、振型和振幅等振动参数,对脊柱侧弯的振动特性分析等方面具有重要意义。

https://orcid.org/0000-0002-7177-6186 (张玉芳)

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

关键词: 脊柱侧弯, 模态分析, 有限元分析, 振动, 频率

Abstract: BACKGROUND: Vibration environment can cause spinal injury, especially in patients with scoliosis. At present, there is no information about the inherent mode of the whole spine from T1 to the pelvis in scoliosis patients in the free state. 
OBJECTIVE: To analyze the dynamic characteristics of the whole spine in patients with scoliosis by the finite element method. 
METHODS: Based on CT scan images, a three-dimensional finite element model of the T1-pelvic total spine of an 11-year-old patient with thoracolumbar biflexion scoliosis was established, and the Cobb angles of thoracolumbar scoliosis were 36° and 24°, respectively. The mode analysis in the free state of the whole spine was carried out by the finite element method. 
RESULTS AND CONCLUSION: The fifteen-order free modes of the spine were extracted, and the dynamic characteristics of the scolio-curved spine were obtained. The resonance frequency distribution of the spine was concentrated. The thoracic vertebra was the most deformed in the whole spine model, and the amplitude of the thoracic vertebra was larger than that of the lumbar vertebra. Modal analysis was used to analyze the vibration characteristics of scoliosis patients in the vibration environment. It is of great significance to determine the natural frequency, vibration mode, and amplitude of scoliosis patients for analyzing the vibration characteristics of scoliosis. 

Key words: scoliosis, modal analysis, finite element analysis, vibration, frequency

中图分类号: