Anterior cervical decompression surgery

1. Spinal cord cervical spondylosis, cervical disc herniation, posterior longitudinal ligament ossification (solitary type) with symptoms of spinal cord compression. 2. Nerve root cervical spondylosis, which is ineffective after conservative treatment, has severe symptoms and recurrent attacks. 3. Vertebral artery type cervical spondylosis has symptoms of repeated dizziness and falls. It is not effective after conservative treatment for a long time, and by vertebral angiography, it is determined that the compression can be explained by surgery.