Fig. 3

A 50-year-old woman with C1 left anterior and posterior arch fractures (A, H), lateral mass displacement (B, D, E) and Type II TAL injury (C). Postoperative CT scans and 3-D reconstructed images revealed satisfactory reduction (F, G, I).The lateral and open-mouth X-ray image (J, K) at 2 months after surgery revealed that the screws of the atlas lateral masses were placed sufficiently, and the fixation system was not loose. The patient completely recovered the full range of motion of the cervical spine without pain at the last follow-up (L-O). The lateral radiograph of the fexion-extension cervical spine demonstrated good atlantoaxial stability without dislocation (P-Q)