No stenosis of the cervical spinal canal means that there is no significant compression of the nerves in the cervical spinal canal, such as the dural sac and spinal cord. If the cervical spinal canal is not narrowed, there will be no cervical disc herniation, no osteophytes in the cervical spinal canal, and no ligamentous hypertrophy or calcification in the cervical spinal canal, which means that the cervical spine does not have a theoretical basis for cervical spondylosis. If the neck symptoms are triggered, it means that they are caused by other lesions in the neck and are not due to cervical spondylosis. If there is no narrowing of the cervical spinal canal, there will not be a series of symptoms caused by cervical spinal stenosis, and there will not be symptoms caused by cervical disc herniation.