Dynamic evaluation of the cervical spine by kinematic MRI in patients with cervical spinal cord injury without fracture and dislocation

医学 脊髓 脊髓损伤 绳索 椎管 矢状面 磁共振成像 解剖 外科 放射科 精神科
作者
Ao Liu,Nan-hai Qiu,Xueren Zhong,Xiang Fang,Junjian Liao,Zhipeng Zhang,Pei-Feng Zheng,Yongyu Hu,Konghe Hu,Ying-Hui Xiong,Lin-Jun Lu,Xin-Hua Xi,Qiang Wu,Yongzheng Bao
出处
期刊:Journal of Orthopaedic Surgery and Research [BioMed Central]
卷期号:18 (1) 被引量:4
标识
DOI:10.1186/s13018-023-03745-1
摘要

Abstract Background The pattern of changes in the cervical spine and the spinal cord and their dynamic characteristics in patients with cervical spinal cord injury without fracture and dislocation remain unclear. This study aimed to evaluate the dynamic changes in the cervical spine and spinal cord from C2/3 to C7/T1 in different positions by using kinematic magnetic resonance imaging in patients with cervical spinal cord injury without fracture and dislocation. This study was approved by the ethics committee of Yuebei People's Hospital. Methods Using median sagittal T2-weighted images for 16 patients with cervical spinal cord injury without fracture and dislocation who underwent cervical kinematic MRI, the anterior space available for the cord, spinal cord diameter, posterior space available for the cord from C2/3 to C7/T1, and Muhle’s grade were determined. The spinal canal diameter was calculated by adding the anterior space available for the cord, spinal cord diameter, and posterior space available for the cord. Results The anterior space available for the cord, posterior space available for the cord, and spinal canal diameters at C2/3 and C7/T1 were significantly higher than those from C3/4 to C6/7. Muhle’s grades at C2/3 and C7/T1 were significantly lower than those at the other levels. Spinal canal diameter was lower in extension than in the neutral and flexion positions. In the operated segments, significantly lesser space was available for the cord (anterior space available for the cord + posterior space available for the cord), and the spinal cord diameter/spinal canal diameter ratio was higher than those in the C2/3, C7/T1, and non-operated segments. Conclusion Kinematic MRI demonstrated dynamic pathoanatomical changes, such as canal stenosis in different positions, in patients with cervical spinal cord injury without fracture and dislocation. The injured segment had a small canal diameter, high Muhle’s grade, low space available for the cord, and high spinal cord diameter/spinal canal diameter ratio.

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