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寰枢椎后路椎弓根螺钉固定的生物力学评价
引用本文:马向阳,钟世镇,刘景发,尹庆水,徐达传,赵卫东,黄文华.寰枢椎后路椎弓根螺钉固定的生物力学评价[J].中国脊柱脊髓杂志,2003,13(12):735-738.
作者姓名:马向阳  钟世镇  刘景发  尹庆水  徐达传  赵卫东  黄文华
作者单位:1. 第一军医大学临床解剖学研究所,510515,广州市
2. 广州军区广州总医院骨科,510010,广州市
基金项目:广东省科技重点计划项目(编号:A302020401)
摘    要:目的:评价寰枢椎后路椎弓根螺钉固定的生物力学稳定性。方法:6具新鲜颈椎标本,按随机顺序,对每一标本先后行C1-C2椎弓根螺钉、Magerl螺钉、Brooks钢丝以及螺钉联合钢丝固定,在脊柱三维运动实验机上测量其三维运动范围。结果:Magerl螺钉或C1-C2椎弓根螺钉联合Brooks钢丝组成的固定系统的三维运动范围最小。C1-C2椎弓根螺钉固定的前后屈伸运动范围与Brooks钢丝固定无差异,但大于Magerl螺钉;其左右侧屈运动范围小于Brooks钢丝固定,大于Magerl螺钉;其轴向旋转角度明显小于Brooks钢丝固定,但与Magerl螺钉无统计学差异。结论:C1-C2椎弓根螺钉的三维稳定性与Magerl螺钉相当,联合Brooks钢丝固定可进一步提高其稳定性。

关 键 词:寰枢椎  椎弓根螺钉  内固定  生物力学  Brooks钢丝
文章编号:1004-406X(2003)-12-0735-04
修稿时间:2003年3月21日

Biomechanical evaluation of C1-C2 pedicle screw fixation of atlantoaxial joint
MA Xiangyang,ZHONG Shizhen,LIU Jingf,et al Institute of Clinical Anatomy,the First Military Medical University,Guangzhou,China.Biomechanical evaluation of C1-C2 pedicle screw fixation of atlantoaxial joint[J].Chinese Journal of Spine and Spinal Cord,2003,13(12):735-738.
Authors:MA Xiangyang  ZHONG Shizhen  LIU Jingf  Institute of Clinical Anatomy  the First Military Medical University  Guangzhou  China
Institution:MA Xiangyang,ZHONG Shizhen,LIU Jingfa,et al Institute of Clinical Anatomy,the First Military Medical University,Guangzhou,510515,China
Abstract:Objective:To evaluate the biomechanical stability of C1-C2 pedicle screw fixation technique for atlantoaxial instability.Method:Six atlantoaxial complex fresh specimens,according to a random sequence,each was fixed using C1-C2 pedicle screw fixation technique,Magerl screw technique,Brooks wiring technique and screw-wiring combined technique,then biomechanical data(range of motion,ROM) were measured.Result:Either Magerl screws or C1-C2 pedicle screws combined with Brooks wiring got the lowest three dimensional movements of the fixation techniques.The ROM of C1-C2 pedicle screw fixation,in anterior-posterior direction,equivalent to Brooks wiring and bigger than Magerl screw;lower than Brooks wiring and bigger than Magerl screw.The dynamic range of C1-C2 pedicle fixation in lateral bending,and axial rotation were lower than Brooks wiring but no statistic significance comparing with Magerl screw.Conclusion:The biomechanical stability of the C1-C2 pedicle screw fixation technique equivalent to that of Magerl screw technique,combined with the wiring fixation would enhance the stability of the technique.
Keywords:Atlantoaxial joint  Pedicle  Internal fixation  Biomechanics  
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