1988
DOI: 10.1097/00007632-198807000-00023
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Correlative Anatomy of Cervical Spondylotic Myelopathy

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Cited by 103 publications
(55 citation statements)
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“…Other findings diagnostic of, or consistent with, cervical myelopathy included a positive Hoffman sign, positive Romberg sign, impaired tandem walk and ankle clonus [1,9]. The abnormal pyramidal tract findings were accentuated by neck extension and flexion, maneuvers known to aggravate spinal cord compression in the face of spinal stenosis or ventral cervical disc protrusion or bone spurs [1,4,7,26,40,41,42,50]. The bilateral involvement of the upper and lower extremities and the presence of a high thoracic sensory level would localize the neurological abnormalities to the cervical spinal cord or cervicomedullary junction and would be consistent with, if not diagnostic of, the clinical diagnosis of cervical myelopathy.…”
Section: Discussionmentioning
confidence: 99%
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“…Other findings diagnostic of, or consistent with, cervical myelopathy included a positive Hoffman sign, positive Romberg sign, impaired tandem walk and ankle clonus [1,9]. The abnormal pyramidal tract findings were accentuated by neck extension and flexion, maneuvers known to aggravate spinal cord compression in the face of spinal stenosis or ventral cervical disc protrusion or bone spurs [1,4,7,26,40,41,42,50]. The bilateral involvement of the upper and lower extremities and the presence of a high thoracic sensory level would localize the neurological abnormalities to the cervical spinal cord or cervicomedullary junction and would be consistent with, if not diagnostic of, the clinical diagnosis of cervical myelopathy.…”
Section: Discussionmentioning
confidence: 99%
“…Neck extension is known to reduce the antero-posterior spinal canal diameter as a result of increased disc protrusion, infolding of the ligamentum flavum and the gliding action facilitated by the horizontal orientation of the facet articular surfaces [4,26,40,42,48,50]. As the cervical spine is a dynamic structure, we felt that dynamic imaging would be more informative than static imaging.…”
Section: Discussionmentioning
confidence: 99%
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“…The gantry angle was altered to obtain images perpendicular to the spine at each level despite the exaggerated lordosis attendant on neck extension. The mid-sagittal antero-posterior dimension of the spinal canal was determined at the level of the intervertebral disc space on both neutral and extended neck images [34]. The actual diameter available to accommodate the spinal cord, dura mater and cerebrospinal fluid was determined by measuring the distance between the posterior most projection of the intervertebral disc anteriorly and the ligamentum flavum or lamina posteriorly as determined by which structure was most contiguous to the dorsal surface of the dura.…”
Section: Radiological Imagingmentioning
confidence: 99%
“…A strong correlation has been demonstrated between narrowing of the sagittal diameter of the cervical spine and the development of CSM. [8][9][10][11][12] The second component is the dynamic mechanical factor, characterized by repetitive movement of the compressed spinal cord. In flexion, the spinal cord lengthens, which results in axial tension and, potentially, ischemia.…”
mentioning
confidence: 99%