Canal diameter, anteroposterior compression ratio, and spondylotic myelopathy of the cervical spine. 1983

H Ogino, and K Tada, and K Okada, and K Yonenobu, and T Yamamoto, and K Ono, and H Namiki

Nine patients with cervical spondylotic myelopathy, diagnosed during life, were subjected to detailed clinicopathologic study. The degree of cord destruction was in good correlation with the ratio of the anteroposterior diameter to the transverse diameter, designated as an anteroposterior compression ratio. Within the factors responsible for decrease in the ratio, developmental narrowing of the spinal canal was the most significant, and multiplicity of spondylotic protrusion less so. The former resulted in an extensive demyelination of the posterolateral funiculus and infarction of the gray matter. Recurrent trauma proved to cause distinct manifestations and cord pathology. Clinicopathologic correlations were also examined from the neurologic findings at the terminal stage.

UI MeSH Term Description Entries
D008297 Male Males
D009128 Muscle Spasticity A form of muscle hypertonia associated with upper MOTOR NEURON DISEASE. Resistance to passive stretch of a spastic muscle results in minimal initial resistance (a "free interval") followed by an incremental increase in muscle tone. Tone increases in proportion to the velocity of stretch. Spasticity is usually accompanied by HYPERREFLEXIA and variable degrees of MUSCLE WEAKNESS. (From Adams et al., Principles of Neurology, 6th ed, p54) Clasp-Knife Spasticity,Spastic,Clasp Knife Spasticity,Spasticity, Clasp-Knife,Spasticity, Muscle
D002574 Cervical Vertebrae The first seven VERTEBRAE of the SPINAL COLUMN, which correspond to the VERTEBRAE of the NECK. Cervical Spine,Cervical Spines,Spine, Cervical,Vertebrae, Cervical
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D013115 Spinal Canal The cavity within the SPINAL COLUMN through which the SPINAL CORD passes. Vertebral Canal,Vertebral Foramen,Vertebral Foramina,Canal, Spinal,Canal, Vertebral,Foramen, Vertebral,Foramina, Vertebral,Spinal Canals,Vertebral Canals,Vertebral Foramens
D013117 Spinal Cord Compression Acute and chronic conditions characterized by external mechanical compression of the SPINAL CORD due to extramedullary neoplasm; EPIDURAL ABSCESS; SPINAL FRACTURES; bony deformities of the vertebral bodies; and other conditions. Clinical manifestations vary with the anatomic site of the lesion and may include localized pain, weakness, sensory loss, incontinence, and impotence. Conus Medullaris Syndrome,Myelopathy, Compressive,Extramedullary Spinal Cord Compression,Spinal Cord Compression, Extramedullary,Compression, Spinal Cord,Compressions, Spinal Cord,Compressive Myelopathy,Conus Medullaris Syndromes,Spinal Cord Compressions,Syndrome, Conus Medullaris,Syndromes, Conus Medullaris
D013122 Spinal Diseases Diseases involving the SPINE. Disease, Spinal,Diseases, Spinal,Spinal Disease

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