Kar Maitreyee, Bhaumik Dipankar, Ishore Kaushik, Saha Pallab Kumar
Associate Professor, Department of Anatomy, North Bengal Medical College, Siliguri, West Bengal, India.
Assistant Professor, Department of Anatomy, North Bengal Medical College, Siliguri, West Bengal, India.
J Clin Diagn Res. 2017 May;11(5):AC08-AC11. doi: 10.7860/JCDR/2017/25981.9899. Epub 2017 May 1.
A large proportion of adults suffer from neck pain at some points of their life and show altered ranges of spinal canal morphometry in various studies. The differences in values are also seen due to genetic, hormonal and other factors too. Torg's ratio is a widely accepted measurement to eliminate such discrepancies. The measurement of Space Available for Cord (SAC) is also gaining importance as spinal stenosis is a contributor to neck pain.
(1) To examine the cervical spinal canal and spinal cord morphometric determinants in symptomatic sub-Himalayan North Bengal population and to compare the obtained data with other populations; (2) To determine whether Torg's ratio vary with gender or not; (3) To determine SAC values in symptomatic individuals.
Magnetic Resonance Imaging (MRI) based on midsagittal diameter of vertebral body, spinal canal, spinal cord and its Torg's ratio and SAC value of the lower cervical spine (C3-C7) from 71 symptomatic adults were recorded at the Radiology Department of North Bengal Medical College and Hospital, Bengal, India. Individuals with any evidence of trauma, infection, neoplasia or any congenital anomalies related to spinal canal and below 18 years of age were excluded from the study.
The average diameter for vertebral body was significantly larger in males. The average diameter for spinal canal, spinal cord and values of Torg's ratio and SAC has no significant gender difference. But the mean value of Torg's ratio is greater in females is due to smaller vertebral body size in females.
It is interpreted from our study that sagittal spinal canal diameter, Torg's ratio and SAC value did not show any significant gender difference. But sagittal vertebral body's diameter showed sexual dimorphism which influenced the mean value of Torg's ratio.
很大一部分成年人在人生的某些阶段会遭受颈部疼痛，并且在各种研究中显示出椎管形态测量值的改变。由于遗传、激素和其他因素，这些数值也存在差异。托格比率是一种被广泛接受的测量方法，用于消除此类差异。随着椎管狭窄是颈部疼痛的一个原因，脊髓可用空间（SAC）的测量也越来越重要。
（1）检查喜马拉雅山北孟加拉邦有症状人群的颈椎管和脊髓形态学决定因素，并将获得的数据与其他人群进行比较；（2）确定托格比率是否随性别而变化；（3）确定有症状个体的SAC值。
在印度孟加拉邦北孟加拉医学院和医院放射科，记录了71名有症状成年人下颈椎（C3 - C7）基于椎体、椎管、脊髓的矢状径及其托格比率和SAC值的磁共振成像（MRI）。有任何创伤、感染、肿瘤或与椎管相关的先天性异常证据以及年龄在18岁以下的个体被排除在研究之外。
男性椎体的平均直径明显更大。椎管、脊髓的平均直径以及托格比率和SAC值没有显著的性别差异。但女性托格比率的平均值更大是因为女性椎体尺寸较小。
从我们的研究中可以推断，矢状椎管直径、托格比率和SAC值没有显示出任何显著的性别差异。但矢状椎体直径表现出性别二态性，这影响了托格比率的平均值。
