Operation name: posterior cervical decompression, arthrodesis, release of arthrodesis stricture, spinal exploration, wound drainage. Anterior cervical decompression, removal of cervical 5/6 intervertebral disc, release of hooked vertebral joint, repositioning of cervical 5/6 subluxation, spinal canal exploration, fusion of cervical 5/6 intervertebral fusion with bone graft, internal fixation of cervical 3-7 titanium plate screw, wound drainage.