中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (19): 3038-3043.doi: 10.3969/j.issn.2095-4344.2017.19.014

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

不同截骨方式修复强直性脊柱炎后凸畸形的有限元分析

马 涌,斯刊达尔•斯依提,欧 勇,艾克热木江•木合热木,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:2017-07-08 发布日期:2017-08-10
  • 通讯作者: 马原,副教授,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:马涌,男,1979年生,新疆维吾尔自治区乌鲁木齐市人,回族,新疆医科大学毕业,主治医师,主要从事脊柱外科方面的研究。
  • 基金资助:

    国家自然科学基金资助项目(81360280)

Finite element analysis of kyphosis in ankylosing spondylitis treated by different osteotomy methods  

Ma Yong, Sikandaer•Siyiti, Ou Yong, Aikeremujiang•Muheremu, Ma Yuan   

  1. First Department of Spine Surgery, the Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • Online:2017-07-08 Published:2017-08-10
  • Contact: Ma Yuan, Associate professor, First Department of Spine Surgery, the Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • About author:Ma Yong, Attending physician, First Department of Spine Surgery, the Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi 830002, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81360280

摘要:

文章快速阅读:

 
 
 

 

文题释义:
骨盆参数:骨盆入射角是指骶骨终板中垂线和骶骨终板中点和股骨头中心连线的夹角,骨盆倾斜角是S1终板中点到股骨头中心线与垂线的夹角,骶骨倾斜角是S1终板与水平线的夹角。
矢状面平衡:主要是指脊柱、骨盆、肌肉、韧带、椎间盘等组织协调稳定,机体具备良好的代偿能力,使用最小的力量保持稳定的站立姿势状态。
 
摘要
背景:强直性脊柱炎后凸是一类矢状面或者冠状面失衡的脊柱畸形,目前国内外缺乏对其矫形生物力学的研究,而生物力学对矫形后重建脊柱稳定性十分重要。
目的:应用计算机建模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,为临床实践提供一定的理论依据。
方法:基于CT数据建立强直性脊柱炎后凸畸形三维有限元模型,测量计算L3节段预截骨角度,模拟去松质骨截骨术和全脊椎截骨术进行截骨,并分析矫形后的生物力学指标变化。
结果与结论:①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L3去松质骨截骨术和全脊椎截骨术2种不同术式截骨模型;②除S1节段外,L3去松质骨截骨术的各节段钉棒应力及截骨接触面应力均高于L3全脊椎切除术,两者差距明显;③综上,2种不同截骨手术方式均能重建矢状面平衡,但去松质骨截骨术的钉棒应力高于全脊椎截骨术,且差距较为明显;在相同节段,相同角度下去松质骨截骨术发生内固定失败并发症的风险高于全脊椎截骨术。

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: 0000-0001-5397-3664(马涌)

关键词: 骨科植入物, 数字化骨科, 强直性脊柱炎后凸, 生物力学, 有限元分析, 脊柱截骨术, 国家自然科学基金

Abstract:

BACKGROUND: Kyphosis in ankylosing spondylitis is sagittal or coronal imbalance, but there is a lack of study on its orthopedic biomechanics, and biomechanics is of great significance for the reconstruction of spinal stability after orthopedic surgery.

OBJECTIVE: To establish a three-dimensional (3D) finite element model of kyphosis in ankylosing spondylitis treated by osteotomy on software, and to analyze its biomechanical properties, thus providing theoretical basis for clinical practice.
METHODS: A 3D finite element model of kyphosis in ankylosing spondylitis was established based on CT data, and the predetermined angle of the osteotomy at L2 was measured. Afterwards, vertebral column decancellation and vertebral column resection were stimulated, and then the biomechanical parameters were analyzed.
RESULTS AND CONCLUSION: (1) The 3D finite element models of kyphosis in ankylosing spondylitis treated by vertebral column decancellation or vertebral column resection at L3 were established successfully. (2) The stress on the screw and contact at each segment in the vertebral column decancellation group was significantly higher than that in the vertebral column resection group except for S1. (3) To conclude, both two methods can reconstruct the sagittal balance, but vertebral column decancellation exhibits significantly higher stress on the screw. Indeed, the incidence of internal fixation failure and complications in vertebral column decancellation is higher than that in vertebral column resection at the same segment and angle.
 
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

中图分类号: