中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (4): 605-608.doi: 10.3969/j.issn.1673-8225.2012.04.008

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

上胸椎前路钛板与颈前路钛板内固定装置的拔出强度实验**★

刘会江1,詹新立1,肖增明1,顾容赫1,刘  云1,罗巨利1,梁栋柱2   

  1. 1广西医科大学第一附属医院脊柱骨病外科,广西壮族自治区南宁市 530021;2南方医科大学医学生物力实验室,广东省广州市  510515
  • 收稿日期:2011-08-03 修回日期:2011-10-24 出版日期:2012-01-22
  • 通讯作者: 詹新立,教授,广西医科大学第一附属医院脊柱骨病外科,广西壮族自治区南宁市 530021 xl.zhandocter@yahoo.com.cn
  • 作者简介:刘会江★,男,1985年生,2012年广西医科大学毕业,硕士,医师,主要从事脊柱外科,生物力学方面的研究。 huijiangliuguke@163.com
  • 基金资助:

    国家自然科学基金(30960386),课题名称:上胸椎前路内固定系统及相关研究;广西自然科学基金(0832039),课题名称:与上胸椎前路内固定相关的解剖及生物力学研究。

Plate pull-out strength of upper thoracic anterior titanium plate and anterior cervical titanium plate fixed system

Liu Hui-jiang1, Zhan Xin-li1, Xiao Zeng-ming1, Gu Rong-he1, Liu Yun1, Luo Ju-li1, Liang Dong-zhu2   

  1. 1Department of Orthopedics, First Affiliated Hospital of Guangxi Medical University, Nanning  530021, Guangxi Zhuang Autonomous Region, China; 2Biomechanical Laboratory of Southern Medical University, Guangzhou  510515, Guangdong Province, China
  • Received:2011-08-03 Revised:2011-10-24 Online:2012-01-22
  • Contact: Zhan Xin-li, Professor, Department of Orthopedics, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China xl.zhandocter@yahoo.com.cn
  • About author:Liu Hui-jiang★, Master, Physician, Department of Orthopedics, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China huijiangliuguke@163.com
  • Supported by:

    2011-08-03the National Natural Science Foundation of China, No. 30960386*; the Natural Science Foundation of Guangxi Zhuang Autonomous Region, No. 0832039*

摘要:

背景:目前尚无专门用于上胸椎前路的内固定器械,课题组自行研制的内固定器械已申请了专利,仍在进一步研究当中。
目的:对自行研制的上胸椎前路钛板内固定装置与颈椎前路Orion钛板内固定装置拔出强度进行比较,探讨上胸椎前路钛板固定的可行性。
方法:6例新鲜成人T2~T4尸体标本随机分为两组,即上胸椎前路钛板内固定组,颈椎前路Orion钛板内固定组,切除T3椎体和T2/3、T3/4椎间盘组织,同一尸体髂骨上取适当大小的骨块植入T3椎体缺损处,然后分别安装好内固定,在生物力学试验机上通过传感器测出固定钛板的最大拔出力并进行统计学分析。
结果与结论:上胸椎前路钛板内固定装置最大拔出力平均(1 005.11±252.78) N,强于颈椎前路Orion钛板内固定装置 (469.37±142.75) N,差异有显著性意义(P < 0.05)。可见自行研制的上胸椎前路钛板内固定装置拔出强度优于颈椎前路Orion钛板内固定装置,由此推断上胸椎前路内固定装置是比较牢固的,为后期临床应用奠定了实验基础。

关键词: 拔出强度, 上胸椎, 前路钛板, 生物力学, Orion钛板

Abstract:

BACKGROUND: There is no dedicated upper thoracic anterior fixed system, the fixation devices deceloped by ourself has applied for a patent, which is still in the further research.
OBJECTIVE: To evaluate the pull-out strength of self-designed upper thoracic anterior titanium plate fixed system and Orion anterior cervical titanium plate fixed system and to explore whether the upper thoracic anterior titanium plate fixation is feasible.  METHODS: Intact T2-T4 specimens from 6 fresh corpses were randomly divided into two groups: group A with upper thoracic anterior titanium plate fixation and group B with Orion anterior cervical plate fixation. T3 vertebral body and T2/3, T3/4 disc tissue were resected, then taken the appropriate iliac bone in the same body implanted in the T3 vertebral bone defect, and each of their fixation were installed.The pull-out strength was tested in the biomechanical testing machine and analyzed statistically.
RESULTS AND CONCLUSION: The average pull-out strength of the group A was (1 005.11±252.78) N, and it was stronger than that of the group B (469.37±142.75) N, the difference was statistically significance (P < 0.05). The self-designed upper thoracic anterior titanium plate fixation device pull-out strength is superior to Orion anterior cervical titanium plate fixation device, which provided an experimental basis for later clinical application.

中图分类号: