中国临床解剖学杂志 ›› 2017, Vol. 35 ›› Issue (3): 307-311.doi: 10.13418/j.issn.1001-165x.2017.03.015

• 临床生物力学 • 上一篇    下一篇

用于治疗难复位性寰枢椎脱位的新型经口前路寰枢椎侧块融合器的生物力学研究

莫少东1,2, 艾福志1,2, 李克维2, 李柯柯2, 陈树金2   

  1. 1.南方医科大学,  广州   510015; 2.广州军区广州总医院,  广州    510010
  • 收稿日期:2017-02-10 出版日期:2017-05-25 发布日期:2017-06-23
  • 通讯作者: 艾福志,副教授,副主任医师,硕士生导师, Tel:(020)88653535,E-mail:spine2000@126.com
  • 作者简介:莫少东(1991-),男,广东茂名人,在读硕士,主要从事上颈椎损伤及疾患的基础与临床研究,Tel:(020)88653535,E-mail:sendolh10@126.com
  • 基金资助:

     军队十二五重点项目(BWS11C065)

Biomechanical study of a novel transoral atlantoaxial lateral mass fusion cage used for irreducible atlantoaxial dislocation

MO Shao-dong 1,2, AI Fu-zhi 1,2, LI Ke-wei 2, LI Ke-ke 2, CHEN Shu-jin 2   

  1. 1.Southern Medical University, Guangzhou 510515, China; 2.Guangzhou Hospital of Guangzhou Military Command of PLA, Guangzhou 510010, China
  • Received:2017-02-10 Online:2017-05-25 Published:2017-06-23

摘要:

目的 比较新型寰枢椎侧块融合器与传统内固定方式(TARP+髂骨块内固定技术,后路椎弓根钉棒固定技术)的生物力学差异。   方法 收集40例TARP术后病人的CT扫描数据进行测量并设计新型融合器。挑选6具新鲜上颈椎标本。分别进行完整状态,失稳状态及进行3种内固定方式[(TARP+融合器(A1);TARP+髂骨块(A2);后路椎弓根钉棒技术(B)]处理。再测量不同状态下标本的屈伸,侧屈,旋转6组动作的活动范围(ROM)并进行统计学分析。   结果 新型融合器有三种型号:13/12/7,12/11/7,11/10/7(长/宽/高);矢状面角设计为:16°/18°/20°。生物力学数据分析显示:Cage组(A1)与髂骨组(A2)在6个方向的活动度差异无统计学差异(P>0.05);在屈伸及旋转活动中,TARP固定组(A1、A2)与后路固定组(B)不存在显著差异(P>0.05);在侧屈活动中,TARP固定组(A1、A2)与后路固定组(B)存在显著差异(P<0.05)。   结论 配合TARP技术使用的新型融合器与TARP+髂骨块的生物力学稳定性相仿,在侧屈方向优于寰枢椎后路椎弓根螺钉技术。且融合器相对于髂骨块而言,理论上具有以下优势:①简化手术步骤;②避免取髂骨相关并发症。

关键词: 经口前路,  寰枢椎,  融合器,  生物力学

Abstract:

Objective  To compare the stabilities of the lateral mass fusion cage and iliac crest autograft combined with Transoral Atlantoaxial Reduction Plate (TARP) system and posterior C1-C2 pedicle screw-rod system.  Method Cage was designed based on the three-dimension parameters of 40 postoperative patients operated with TARP. Range of motion (ROM) in flexion-extension, left-right bending and axial rotation of 6 cadaveric specimens with different treatments were recorded.  Results  The measured data indicated that feasible cage design were in 3 sizes: 13/12/7/16°,12/11/7/18°,11/10/7/20°(length/width/height/sagittal angle);ROM of TARP (combined with Cage or ilium) was smaller compared with posterior C1-C2 pedicle screw-rod system and difference between left and right bending was statistically significant.  Conclusion The stiffness was analogous between TARP system (combined with cage or iliac crest autograft) and posterior C1-C2 pedicle screw-rod system. Furthermore, cage combined with TARP may simplify surgeric procedure and decrease the incidence of clinical complication.

Key words: Transoral approach,  Atlantoaxial,  Cage,  Biomechanics