Kinetic changes in the spinal cord occupation rate of dural sac in cervical spondylotic myelopathy.

Machino, Masaaki; Ito, Keigo; Kato, Fumihiko; Ando, Kei; Kobayashi, Kazuyoshi; Nakashima, Hiroaki; Kanbara, Shunsuke; Ito, Sadayuki et al. · J Orthop · 2021

cross_sectional · Level IV

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Abstract

The study aimed to establish the spinal cord occupation rate of the dural sac during flexion and extension. 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. 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. 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.

Anatomy