Fig. 3

A 41-year-old man was diagnosed with BI with IAAD after a failed posterior OCF, and revised by transoral intraarticular cage distraction and C-JAWS fixation. a-c Images of cervical X-rays and CT scan before revision surgery showed evidence of BI with IAAD. d Preoperative Sagittal MRI showed compression of the cervicomedullary junction. e-g Postoperative cervical X-rays and CT scan performed at 1 week after revision surgery showed satisfactory reduction and fixation. h Postoperative sagittal MRI showed a desirable decompression of the cervicomedullary junction. i Postoperative three-dimensional reconstruction showed location of C-JAWS. j-l Cervical X-rays and CT scan at 6-month follow-up showed a solid bone fusion without loss of reduction