中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (44): 6541-6548.doi: 10.3969/j.issn.2095-4344.2016.44.001

• 人工假体 artificial prosthesis •    下一篇

人工颈椎间盘置换与前路颈椎间盘切除融合后邻近节段椎间盘应力分布的有限元对比

刘雅普1,2,侯秀伟2,吴广良2,夏 虹3   

  1. 1南方医科大学,广东省广州市 510515;2漯河市骨科医院,河南省漯河市 462300;3解放军广州军区广州总医院,广东省广州市 510515
  • 修回日期:2016-08-26 出版日期:2016-10-28 发布日期:2016-10-28
  • 通讯作者: 夏虹,教授,博士生导师,解放军广州军区广州总医院,广东省广州市 510515
  • 作者简介:刘雅普,男,1985年生,河南省禹州市人,汉族,南方医科大学在读博士,主治医师,主要从事脊柱外科方面的研究。
  • 基金资助:

    河南省教育厅高等学校重点科研项目(16A320076)

Comparison of stress distribution of adjacent segments after artificial cervical disc replacement versus anterior cervical discectomy and fusion: a finite element analysis

Liu Ya-pu1,2, Hou Xiu-wei2, Wu Guang-liang2, Xia Hong3   

  1. 1Southern Medical University, Guangzhou 510515, Guangdong Province, China; 2Luohe Orthopedics Hospital, Luohe 462300, Henan Province, China; 3Guangzhou General Hospital of Guangzhou Military Area of Chinese PLA, Guangzhou 510515, Guangdong Province, China
  • Revised:2016-08-26 Online:2016-10-28 Published:2016-10-28
  • Contact: Xia Hong, Professor, Doctoral supervisor, Guangzhou General Hospital of Guangzhou Military Area of Chinese PLA, Guangzhou 510515, Guangdong Province, China
  • About author:Liu Ya-pu, Studying for doctorate, Attending physician, Southern Medical University, Guangzhou 510515, Guangdong Province, China; Luohe Orthopedics Hospital, Luohe 462300, Henan Province, China
  • Supported by:

    the Key Scientific Research Project of Higher Learning Schools of Henan Provincial Department of Education, No. 16A320076

摘要:

文章快速阅读:

 

文题释义:
前路颈椎间盘切除融合:是外科治疗颈椎病的经典手术方式,大量的临床研究报道了其优良的应用效果,现已广泛应用于治疗颈椎间盘退行性疾病,长期临床随访显示其可有效解除疼痛及良好融合效果,但是其对邻近节段退变的影响也日益受到广大学者们的关注。
人工颈椎间盘置换:其作为治疗颈椎退行性疾病的一种新兴技术,越来越受到临床的关注,该技术的初衷是为了切除退变突出的椎间盘组织,同时保留椎间高度和关节活动度,理论上讲,关节活动度的保留可以缓解临近节段的退变速度。               
 
摘要
背景:通过前期的临床随访研究发现,前路颈椎融合后邻近节段椎间盘退变速度要快于人工颈椎间盘置换,人工颈椎间盘置换相较于前路颈椎融合可以保持良好的置换节段活动度,是否置换后邻近椎间盘的应力情况与融合之间存在着差异需要进一步研究。
目的:对比人工颈椎间盘置换与前路颈椎间盘切除融合后邻近节段椎间盘的应力分布情况。
方法:选择1 名30岁健康男性志愿者,人工颈椎间盘和颈椎前路钢板实物进行薄层CT扫描,通过Mimics 10.01及Geomagic Studio.v11软件重建出三维图像,将以上三维数据导入Abaqus 6.9有限元分析软件中进行网格划分、赋值、应力分析。利用有限元方法分析模拟人工颈椎间盘置换及前路颈椎间盘切除融合后邻近节段椎间盘的应力变化。
结果与结论:①在相同的预载荷条件下,前屈、后伸、侧屈等运动状态时前路颈椎间盘切除融合后邻近节段椎间盘的应力明显大于正常人相应节段椎间盘应力;而人工椎间盘植入后与正常人相比,在前屈、后伸、侧屈等运动状态时邻近节段椎间盘的应力差异无显著性意义;②前路颈椎间盘切除融合组与人工颈椎间盘置换组相比较,融合组术后邻近节段椎间盘的应力较置换组增大10.3%-51.6%;③有限元分析方法发现,前路颈椎间盘切除融合后邻近节段椎间盘应力大于人工颈椎间盘置换组,随着随访时间的延长,相较于传统前路减压融合,人工颈椎间盘置换可能将更好地发挥其对邻近节段椎间盘的保护作用。

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:
0000-0001-9954-4785(刘雅普)

关键词: 骨科植入物, 数字化骨科, 人工颈椎间盘置换, 前路颈椎间盘切除融合, 邻近节段应力, 有限元分析

Abstract:

BACKGROUND: Previous clinical follow-up study showed that disc degeneration of adjacent segment after anterior cervical discectomy and fusion was faster than that of artificial cervical disc replacement. Compared with the anterior cervical discectomy and fusion, artificial cervical disc replacement can maintain a good range of motion of replacement segment. Further investigation should be taken to compare the difference between stress and fusion after replacement. 

OBJECTIVE: To compare the adjacent level discs loads between artificial cervical disc replacement and anterior cervical discectomy and fusion.
METHODS: A healthy 30-year-old male volunteer was scanned with CT at the artificial cervical intervertebral disc and anterior cervical plate. Three-dimensional images were reconstructed with Mimics 10.01 and Geomagic Studio.v11 software. Above three-dimensional data were input into the Abaqus6.9 finite element analysis software for meshing, assignment, and stress analysis. Finite element method was used to simulate the stress changes of the adjacent segments after artificial cervical disc replacement and anterior cervical discectomy and fusion. 
RESULTS AND CONCLUSION: (1) Under the same preload, during anteflexion, posterior extension, and lateroflexion, the disc stress at adjacent segment was significantly larger after anterior cervical discectomy and fusion than normal disc. Compared with normal persons, no significant difference was detected in stress of adjacent segment at anteflexion, posterior extension, and lateroflexion after artificial cervical disc replacement. (2) Compared with artificial cervical disc replacement group, the stress of adjacent segment increased 10.3%-51.6% in the anterior cervical discectomy and fusion group. (3) Finite element analysis showed that the stress was larger in the anterior cervical discectomy and fusion group than in the artificial cervical disc replacement group. With prolonged follow-up, compared with the conventional anterior decompression and fusion, artificial cervical disc replacement can better play its protective effect on the adjacent intervertebral disc.

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: Cervical Vertebrae, Intervertebral Disk, Stress, Mechanical, Finite Element Analysis, Tissue Engineering

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