Fig. 2
A 63-year-old male patient had typical symptoms of cervical spondylotic myelopathy for 16 months. a Preoperative X-ray showing the same cervical degeneration. b MRI showing serious spinal stenosis at the C3-7 segments. c Postoperative X-ray showing C3-7 open-door laminoplasty with titanium plate fixation. d Postoperative CT showing the titanium plate fixed on the lateral mass, the opening angle was 40.5° and the opening width d was 22.5 mm. e Postoperative MRI showing adequate decompression, and the spinal cord drift distance was 2.7 mm