中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (31): 5042-5047.doi: 10.3969/j.issn.2095-4344.2017.31.021

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

MRI显示神经根沉降征在腰椎管狭窄症中的应用价值

陈延超,余作冲,曹 蓉,尹望平   

  1. 复旦大学附属金山医院,上海市 201508
  • 出版日期:2017-11-08 发布日期:2017-12-01
  • 通讯作者: 尹望平,主任医师,副教授,复旦大学附属金山医院骨科,上海市 201508
  • 作者简介:陈延超,1990年生,山东省临沂市人,汉族,复旦大学在读硕士,主要从事脊柱外科研究。

Application value of nerve root sedimentation sign in lumbar spinal stenosis revealed on MRI

Chen Yan-chao, Yu Zuo-chong, Cao Rong, Yin Wang-ping   

  1. Jinshan Hospital of Fudan University, Shanghai 201508, China
  • Online:2017-11-08 Published:2017-12-01
  • Contact: Yin Wang-ping, Chief physician, Asociate professor, Jinshan Hospital of Fudan University, Shanghai 201508, China
  • About author:Chen Yan-chao, Studying for master’s degree, Jinshan Hospital of Fudan University, Shanghai 201508, China

摘要:

文章快速阅读:

文题释义:
神经根沉降征:在腰椎MRI扫描横断面T2WI图像中,在腰椎两侧小关节顶点间作一水平直线,除外离开硬膜囊的2条神经根,其余马尾神经束均位于椎管背侧定义为沉降征阴性,部分马尾神经束位于椎管腹侧定义为沉降征阳性。
椎管矢状径:是自椎体的后缘至两椎板联合处内缘的最长距离。一般情况下腰椎管矢状径应大于14 mm,如果腰椎管矢状径为10-13 mm即可划分为相对狭窄,椎管矢状径为10 mm或更小者为绝对椎管狭窄,临床上称为腰椎管狭窄症。
 
摘要
背景:神经根沉降征在腰椎管狭窄症患者中的应用价值目前仍未有专家共识。
目的:探讨神经根沉降征在腰椎管狭窄症患者中的阳性率及其关系。
方法:收集281例由于腰痛或腰腿痛在复旦大学附属金山医院骨科门诊或病房申请行腰椎MRI检查的患者,其中男119例,女162例。对患者腰椎管横截面积及椎管矢状径进行定量测量,以腰椎管横截面积及椎管矢状径是否狭窄进行分组,比较各组间神经根沉降征阳性率的差异。
结果与结论:①单独以硬膜囊横截面积是否狭窄进行分组:神经根沉降征在重度腰椎管狭窄症患者中的阳性率为91.4%,在非狭窄患者中阳性率为39.6%,在轻度腰椎管狭窄患者中阳性率为53.5%,差异有显著性意义(P < 0.05),但在轻、中度与中、重度狭窄患者中阳性率差异无显著性意义;②单独以腰椎管矢状径是否狭窄进行分组:非狭窄和狭窄患者的神经根沉降征阳性率差异有显著性意义(44.3%,76.1%,χ2=21.469,P=0.000);③联合硬膜囊横截面积和腰椎管矢状径两个指标分组:硬膜囊横截面积< 120 mm2或者腰椎管矢状径< 10 mm提示存在腰椎管狭窄,非狭窄和狭窄患者的神经根沉降征阳性率差异有显著性意义(40.6%,80.6%,χ2=30.539,P=0.000);④结果表明,神经根沉降征是否可以作为诊断腰椎管狭窄症的一项指标仍有待进一步探讨,尽管在重度狭窄患者中阳性率较高,但在非狭窄人群中同样有较高的阳性率,单纯以沉降征诊断腰椎管狭窄存在假阳性,结合硬膜囊横截面积和椎管矢状径及神经根沉降征共同诊断腰椎管狭窄的意义较大。

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程
ORCID: 0000-0003-4017-5705(陈延超)

关键词: 骨科植入物, 脊柱植入物, 腰椎管狭窄症, 神经根沉降征, 硬膜囊横截面积, 矢状径, 阳性率, 假阳性

Abstract:

BACKGROUND: Clinical value of the nerve root sedimentation sign in patients with lumbar spinal stenosis (LSS) is still uncertain.

OBJECTIVE: To investigate the positive rate and correlation of the nerve root sedimentation sign in patients with LSS.
METHODS: Totally 281 patients complaining lumbago or low back pain underwent MRI examination in the Orthopedic Clinic or Ward of Jinshan Hospital of Fudan University, including 119 males and 162 females. The cross-sectional area and sagittal diameter of the spinal canal were measured, and the patients were then divided into two groups according to the presence and absence of LSS. Finally, the positive rate of nerve root sedimentation sign was compared.
RESULTS AND CONCLUSION: (1) Grouping based on the presence and absence dural sac cross-sectional area stenosis: the positive rate of nerve root sedimentation sign in sever, non, and mild LSS patients was 91.4%, 39.6%, and 53.5%, respectively, and the difference was significant (P < 0.05), but the positive rate showed no significant difference between mild and moderate as well as moderate and severe LSS patients. (2) Grouping according to the presence and absence spinal canal sagittal diameter stenosis: there was a significant difference in the positive rate of nerve root sedimentation sign between non-LSS and LSS patients (44.3% vs. 76.1%, χ2=21.469, P=0.000). (3) Grouping based on the dural sac cross-sectional area combined with spinal canal sagittal diameter: the dural sac cross-sectional area < 120 mm2 or the spinal canal sagittal diameter < 10 mm indicating LSS, there was a significant difference in the positive rate of nerve root sedimentation sign between non-LSS and LSS patients (40.6% vs. 80.6%,χ2=30.539, P=0.000). (4) These results indicate that the diagnosis value of nerve root sedimentation sign in LSS is still under discussion. Although a positive sedimentation sign exclusively and reliably occurs in patients with severe LSS, it is also higher in patients without LSS. It may be inappropriate to take nerve root sedimentation sign as a diagnostic tool, but when combined with dural sac cross-sectional area and sagittal canal subsidence, it will be of great significance for the diagnosis of LSS.

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱骨折;内固定;数字化骨科;组织工程

Key words: Lumbar Vertebrae, Spinal Stenosis, Tissue Engineering

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