Kinetic changes in the spinal cord occupation rate of dural sac in cervical spondylotic myelopathy
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Updated: Nov 11, 2025
Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression
Published on: May 7, 2019
Masaaki Machino1, Keigo Ito2, Fumihiko Kato2
1Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Objective:
The study aimed to establish the spinal cord occupation rate of the dural sac during flexion and extension.
Methods:
We measured the cross-sectional area of the dural sac and the spinal cord between C2/C3 and C7/T1 disc levels in 100 patients with cervical spondylotic myelopathy and 1211 asymptomatic subjects.
Results:
The spinal cord occupation rate of the dural sac in the cross-sectional area was higher on extension than on flexion at the mid-lower cervical spine.
Conclusions:
The spinal cord occupation rate of the dural sac in the cross-sectional area was highest at the C4/C5 and C5/C6 levels on extension.
