中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (3): 415-419.doi: 10.3969/j.issn.2095-4344.0040

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

去松质骨截骨治疗强直性脊柱炎后凸畸形的有限元分析

谢 江,李 栎,马俊毅,眭江涛,朱 旭,马 原   

  1. 新疆医科大学第六附属医院脊柱外一科,新疆维吾尔自治区乌鲁木齐市 830002
  • 出版日期:2018-01-28 发布日期:2018-01-28
  • 通讯作者: 马原,副教授,博士生导师,新疆医科大学第六附属医院脊柱外科,新疆维吾尔自治区乌鲁木齐市 830002
  • 作者简介:谢江,1977年生,新疆维吾尔自治区奇台县人,汉族,2002年新疆医科大学毕业,副主任医师,主要从事脊柱外科研究。
  • 基金资助:

    国家自然科学基金资助项目(81360280)

Finite element analysis of vertebral column decancellation for treatment of ankylosing spondylitis kyphosis   

Xie Jiang, Li Li, Ma Jun-yi, Sui Jiang-tao, Zhu Xu, Ma Yuan   

  1. First Department of Spine Surgery, the Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • Online:2018-01-28 Published:2018-01-28
  • Contact: Ma Yuan, Associate professor, Doctoral supervisor, First Department of Spine Surgery, the Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • About author:Xie Jiang, Associate chief physician, First Department of Spine Surgery, the Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the Natural Science Foundation of China, No. 81360280

摘要:

文章快速阅读:

 
 

文题释义:
强直性脊柱炎后凸畸形:强直性脊柱炎可导致典型的脊柱畸形,如胸椎后凸增大以及胸腰段后凸畸形、腰椎前凸消失。后凸畸形可以导致患者矢状面失衡,脊柱矢状面失平衡可造成患者不能平卧,行走困难,双目不能平视,严重者可引起心肺功能及消化功能下降。患者为代偿躯体重心的前移,常采取屈踝、膝关节,过伸髋关节的姿势,造成能量消耗较大,患者易疲劳。
脊柱后凸截骨术:使失代偿的脊柱和僵硬的脊柱畸形得到矫正和平衡,是治疗成人脊柱畸形十分有效的方法。截骨术通过椎体序列重新建构,使畸形的脊柱重新获得矢状面和冠状面的平衡是各种截骨手术技术的关键点。
 
摘要
背景:强直性脊柱炎后凸畸形是一类脊柱矢状面失平衡的脊柱畸形,由于重心移位,脊柱的生物力学也较复杂,目前对其后凸畸形矫形后的生物力学研究鲜有报道。
目的:应用计算机辅助软件建立强直性脊柱炎后凸截骨三维有限元模型,并分析其生物力学特性。
方法:建立强直性脊柱炎后凸畸形三维有限元模型,根据20°,30°,40°截骨角度模拟去松质骨截骨矫形手术方案,并分析其矫形效果及生物力学。
结果与结论:①成功建立了完整强直性脊柱炎后凸截骨矫形三维有限元模型,并且模拟手术操作建立了截骨角度分别为20°,30°,40°的去松质骨截骨模型;②3组不同截骨矫形方案中,去松质骨截骨30°矫形程度最佳,并且应力分布较小,其T12、L1、L2、L4、L5、S1、钉棒应力分别为7.346 1,11.952,72.783,81.368,28.144,41.114,109.69 MPa;③在去松质骨截骨术30°截骨方式下,术后矫正Cobb角为1.4°,既可获得较佳的矫形程度,同时也能降低由于内固定应力分布集中导致并发症的发生率。

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
ORCID: 0000-0002-6205-9601(谢江)

关键词: 强直性脊柱炎后凸, 去松质骨截骨, 后凸畸形, 骨科植入物, 脊柱植入物, 生物力学, 有限元分析, 国家自然科学基金

Abstract:

BACKGROUND: Kyphosis in ankylosing spondylitis is a kind of spinal sagittal imbalance; due to center of gravity displaced and complicated biomechanical properties of the spine, the spinal biomechanics after kyphosis correction is little reported.

OBJECTIVE: To establish a three-dimensional finite element model of the spine after osteotomy for kyphosis.
METHODS: A three-dimensional finite element model of kyphosis in ankylosing spondylitis was established, simulating three kinds of osteotomy orthopedic programs (osteotomy angle in 20°, 30° and 40°), and the orthopedic effect and biomechanics were analyzed.
RESULTS AND CONCLUSION: (1) The three-dimensional finite element model of finite element model of kyphosis in ankylosing spondylitis was established successfully, and simulated three kinds of osteotomy orthopedic programs at the angles of 20°, 30°, and 40°. (2) The best osteotomy angle was 30°, the stress distribution was less, and the stress on the T12, L1, L2, L4, L5, S1 and rod was 7.346 1, 11.952, 72.783, 81.368, 28.144, 41.114, and 109.69 MPa, respectively. (3) Under 30°osteotomy angle, the postoperative Cobb angle is 1.4°, which not only obtains better orthopedic effect, but also reduces the incidence of complications caused by stress concentration.

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

Key words: Spondylitis, Ankylosing, Kyphosis, Biomechanics, Finite Element Analysis, Tissue Engineering

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