中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (17): 3119-3123.doi: 10.3969/j.issn.1673-8225.2011.17.019

• 数字化骨科 digital orthopedics • 上一篇    下一篇

体外生物力学评价上胸椎前路钛板内固定装置的三维运动稳定性

罗巨利1，詹新立1，肖增明1，贺聚良1，刘会江1，赵卫东2   

  1. 1广西医科大学第一附属医院脊柱骨病科，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:2010-11-30 修回日期:2011-02-23 出版日期:2011-04-23 发布日期:2011-04-23
  • 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科，广西壮族自治区南宁市 530021 xl.zhandocter@yahoo.com.cn
  • 作者简介:罗巨利★，男，1979年生，湖南省涟源人，汉族，硕士，主治医师，主要从事脊柱外科的生物力学研究。 luojuli282@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的研制及相关研究；广西自然科学青年基金(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。

Three-dimensional motion stability of upper thoratic anterior titanium plate fixed system: An in vitro biomechanical study

Luo Ju-li1, Zhan Xin-li1, Xiao Zeng-ming1, He Ju-liang1, Liu Hui-jiang1, Zhao Wei-dong2   

  1. 1Department of Orthopedics, the First Affiliated Hospital of Guangxi Medical University, Nanning  530021, Guangxi Zhuang Autonomous Region, China
    2Laboratory of Medical Biomechanics, Southern Medical University, Guangzhou  510515, Guangdong Province, China
  • Received:2010-11-30 Revised:2011-02-23 Online:2011-04-23 Published:2011-04-23
  • Contact: Zhan Xin-li, Professor, Department of Orthopedics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China xl.zhandocter@yahoo.com.cn
  • About author:Luo Ju-li★, Master, Attending physician, Department of Orthopedics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China luojuli282@163.com
  • Supported by:

    the National Natural Science Foundation of China, No. 30960386*; Guangxi Natural Science Foundation for the Youth, No.0832039*

PDF

485

被引次数

17

摘要：

背景：国内外少见颈前路带锁钢板重建上胸椎的体外生物力学报道。
目的：从生物力学角度评价自行研制的上胸椎前路钛板内固定装置。
方法：15具成人尸体上胸椎标本分成3组，即上胸椎前路钛板内固定组(B)，颈前路钛板预弯内固定组(C)，颈前路钛板未预弯内固定组(D)。对完整标本进行三维活动度测量，分别安装好各组内固定再次进行标本在前屈、后伸和侧弯及旋转状态下的三维运动稳定性测量，并与完整状态(A)进行对比。
结果与结论：在完整状态下B、C、D 3组标本的三维运动稳定性差异无显著性意义(P > 0.05)。前屈稳定性排列：B>D>C>完整，B、A之间差异有显著性意义(P=0.012)；后伸稳定性排列：B>C>A>D，B与A，C，D之间差异有显著性意义(P=0.001，0.021，0.01)；旋转状态下的稳定性排列：B>C>A>D，各组差异无显著性意义；侧弯稳定性排列：A>B>C>D，A和C，D之间差异有显著性(P=0.005，0.002)。提示上胸椎前路钛板装置具有较好的三维稳定性，如果采用颈前路钛板内固定建议塑型。

关键词: 上胸椎, 运动范围, 内固定, 钛板, 生物力学

Abstract:

BACKGROUND: There are few reports about in vitro biomechanical studies of anterior cervical locking plate for upper thoracic reconstruction.
OBJECTIVE: To evaluate the biomechanical characters of self-designed upper thoratic anterior titanium plate fixed system.
METHODS: Intact C7-T6 specimens from 15 fresh corpses were randomly divided into three groups: group B with upper thoracic anterior titanium plate fixation (UTAPF), group C with prespred anterior cervical plate fixation (ACPF), group D with imprespred ACPF. Range of motion (ROM) was tested for the natural intact specimens. Measurement of three-dimensional stability was performed in flexion, extension and lateral bending and rotation state in groups B, C, D after fixation.
RESULTS AND CONCLUSION: ROM of the natural intact specimens in the three groups had no significant difference (P > 0.05). The stability of flexion arranged as follows: B>D>C>intact specimens (A). Significant difference between B and A was found (P=0.012). The stability of extension arranged as follows: B>C>A>D, but there was no significant difference among different groups. The stability of rotation arranged B>C>A>D. Between groups no significant difference was found in the rotation condition. The order of stabilities under the lateral bending was A>B>C>D. There were significant differences between A and C as well as between A and D (P=0.005, P=0.002). The findings indicate that the upper thoracic anterior titanium plate has a better biomechanical stability than cervical plate. If cervical anterior plate was applied to upper thoratic spine, plate should be prespred according to kyphosis of the upper thoratic spine.

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