Cervical spondylotic myelopathy is due to degeneration of the intervertebral joint structure of the cervical vertebrae, such as intervertebral disc herniation, posterior margin spur of the vertebral body, hyperplasia of the hook joint, ossification of the posterior longitudinal ligament, hypertrophy or calcification of the ligamentum flavum, resulting in spinal cord compression or spinal cord ischemia. Then there is dysfunction of the spinal cord. Therefore, cervical spondylotic myelopathy is one of the spinal cord compression diseases, which can be severely disabled, accounting for 10% to 15% of all cervical spondylosis.
In view of the pathological changes of cervical spondylotic myelopathy, it is difficult to relieve spinal cord compression without surgery, and there are not many opportunities for reversal and self-restriction. If there is no surgical contraindication, it should be regarded as a surgical indication.