“…Finally, the clinical symptoms of all patients disappeared after conservative treatment. However, according to imaging evaluation, 4 patients recovered completely[ 2 , 4 , 6 , 7 ], 1 patient had persistent mild OPLL[ 3 ], 2 patients had persistent mild IDC[ 4 , 5 ], and 1 patient had progressive IDC 1 . All reported patients had neck pain or back pain to varying degrees due to the IDC and OPLL extending into the spinal canal, compressing the spinal cord or nerve root, and all went to the hospital with or without neurological defects.…”