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Analysis of correlation between the cervical spinal cord compression and the change of cervical intervertebral disc space ,curvature of cervical vertebrae
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- Author:
- No author available
- Journal Title:
- China Journal of Orthopaedics and Traumatology
- Issue:
- 9
- DOI:
- 10.3969/j.issn.1003-0034.2012.09.004
- Key Word:
- 颈椎病;脊髓压迫症;X线;放射测量术;因素分析,统计学
Abstract： 目的:探讨颈脊髓受压程度与性别、年龄、椎间隙及颈椎曲度变化的相关性,应用多元线性回归方法建立预测颈椎病患者颈脊髓受压程度的模型.方法:选取颈椎病患者120例,按照脊髓受压程度分为4组,在颈椎矢状位MRI T2WI成像上测量颈脊髓受压比例,椎间盘后凸顶点脊髓矢状径(a)、延髓与桥脑交界处矢状径(M),计算a/M值来评估颈脊髓受压程度；在颈椎X线侧位片上测量相应节段椎间隙前后柱高度、椎间隙夹角以及颈椎曲度(颈椎曲度采用Borden's测量法和C2-7 Cobb角双线法)；采用线性回归和多元线性回归分析上述各测量值之间的相关性,建立预测颈椎病患者颈脊髓受压程度的模型.结果:①各测量值随着颈脊髓受压加重而逐渐减小,椎间隙前高、椎间隙角度、a/M比值4组间两两比较差异均有统计学意义(P＜0.05).②a/M比值与椎间隙前高呈正相关(R=0.296,P＜0.001)；a/M比值与弧弦距(颈椎曲度)呈正相关(R=0.241,P＜0.001)；a/M比值与颈脊髓受压比例呈负相关(R=-0.821,P＜0.001)；两种颈椎曲度测量法弧弦距与C2-7 Cobb角成正相关(R=0.840,P＜0.001).③经多元线性回归获得a/M比值的预测方程,其F=8.959,R=0.434,P＜0.001,其中椎间隙前高、年龄和颈椎曲是颈脊髓受压的影响因素.结论:a/M比值可作为临床评价脊髓受压程度的标准；通过颈椎X线片的颈椎间隙、颈椎曲度的变化对颈脊髓受压程度的预测有一定的应用价值.
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