Sakamoto T, Funaba M, Imajo Y, et al. - A retrospective study of prospectively collected data was performed to explore how radiological parameters affect dynamic changes in the cross-sectional area of the spinal cord (CSA) in patients with cervical spondylotic myelopathy (CSM) and how they associate with the severity of myelopathy, by evaluating multi-modal spinal cord evoked potentials. The study enrolled a total of 79 CSM patients. Researchers assessed the C2–7 angle, C2–7 range of motion, and percentage of slip on the midsagittal view during flexion and extension, and the CSA was evaluated on the axial view in each neck position applying kinematic CT myelography. The individuals who showed the smallest CSA values during extension and flexion were categorized into Groups E and F, respectively. During neck flexion, exhibiting more severe spinal cord compression was correlated with a small C2–7 angle and anterior spondylolisthesis. It was shown that in Group F, the neurological status of patients was defined by severe lower limb dysfunction because of a disturbed blood supply to the anterior column.