Lead causes of cervical spondylotic myelopathy

General patients with cervical spondylotic myelopathy in its age. Over 40 years of age, Cervical disc role in the long-term load degradation have occurred under the changes disc relaxation inelastic, yellow ligament hypertrophy, or vertebral facet of weeks there bone hyperplasia. When trauma (perhaps minor injury), the court is cervical disc rupture. Being at the side of the rear or side, and at the same time highlight or extricate himself from the nucleus pulposus, and the spur of cervical common in cervical activities stimulation, spinal cord compression, disc instability, especially when prominent of more serious spinal cord stimulation. In addition. The instability of the cervical spine and bone cutting into, the disc prominent organizations such as spinal cord stimulation of the peripheral sympathetic organizations, and its over-excited, it makes the disposal of a spinal artery spasm and blood supply obstacles, the spinal cord of metabolism and nutrition there will be obstacles, and then there degradation or spinal cord tissue necrosis resulting changes in a series of neurological symptoms. Another situation is the cervical spinal canal stenosis, or cervical bone formation in the rear of the pipeline, due to congenital or acquired developmental factors (such as bone, yellow ligament hypertrophy, etc.) caused the spinal canal diameter of less than pipeline the average level of normal (normal not less than 13 mm), or less than its vertebrae and sagittal diameter ratio of 0.75 boundaries, which makes room for the activities of spinal cord tissue decreases when the further development of the primary lesion, or even encountered minor trauma, spinal cord injury that occurred extrusion. His injury caused by a series of changes and the clinical manifestations will be inevitable. Overall, cervical disc degeneration, vertebral instability, spur formation, trauma caused sudden after the central disc in the original canal very narrow circumstances vertebral continue activities, prominent non-stop concrete complexes to stimulate the spinal cord and oppression, plus the rear of the ligamentum flavum hypertrophy, in the neck stretch when fold, has been under pressure by stimulating the nerve tissue and is the cause of cervical spondylotic myelopathy the main reason.