青少年L5/S1发育不良性滑脱患者的骶骨矢状面形态

被引:14
作者
杜长志 [1 ]
孙旭 [1 ]
王斌 [2 ]
朱泽章 [2 ]
钱邦平 [2 ]
邱勇 [1 ]
机构
[1] 南京医科大学鼓楼临床医学院骨科
[2] 南京大学医学院附属鼓楼医院骨科
关键词
青少年; 腰椎滑脱症; 发育不良; 矢状面; 骶骨形态; 平衡;
D O I
暂无
中图分类号
R726.8 [小儿骨科学];
学科分类号
100202 [儿科学];
摘要
目的 :研究青少年L5/S1发育不良性滑脱患者的骶骨矢状面形态。方法 :回顾性分析2002年5月2016年3月入院手术治疗的13例青少年L5/S1发育不良性滑脱患者,男2例,女11例,年龄12.2±3.1岁(9~18岁)。以年龄匹配的30例正常青少年为对照组。在站立位全脊柱侧位X线片上测量骶骨形态、姿势等参数。采用独立样本t检验对滑脱组和对照组以及滑脱组内低度发育不良亚组和高度发育不良亚组的各参数进行对比分析。结果:滑脱组患者中,10例存在S1上终板拱顶样改变,6例L5椎体楔形变,9例L5-S1后凸成角畸形。其腰骶角、骶骨平台角和S1指数均显著低于对照组;骶骨形态也异于对照组,骶骨角和S1上角显著小于对照组,骶骨头端(S1)曲度减小,然而骶骨的整体后凸角度显著大于对照组(Cobb法:50.1°±10.6°比18.1°±10.4°;Ferguson法:40.5°±9.9°比23.1°±11.5°)。滑脱组矢状面平衡显著大于对照组(46.5±42.3mm比-25.6±21.8mm),且其骨盆入射角、L5入射角、骨盆倾斜角、骨盆矢状面厚度均显著大于对照组(P<0.01),而骶骨倾斜角却显著小于对照组(P<0.05)。滑脱组呈现出躯干明显前倾、骨盆后旋、骶骨直立的姿态。滑脱组中高度发育不良8例,低度发育不良5例。高度发育不良组与低度发育不良组相比,其滑脱程度、骶骨后凸角及矢状面轴向垂直距离均显著增大[(67.3±18.6)%比(45.4±12.5)%;45.8°±8.4°比32.2°±5.1°;52.6±24.7mm比21.6±9.5mm(P<0.05)。结论:青少年L5/S1发育不良性腰椎滑脱患者除腰骶局部发育不良外,骶骨呈明显后凸形态。因躯干前倾,骨盆后旋和骶骨垂直化以代偿矢状面失衡,而这些异常形态受发育不良程度影响。
引用
收藏
页码:991 / 998
页数:8
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