(a)
(b)
(c)
(d)
(e)
(f)
Figure 4: Preop lateral radiograph revealed AAI (a). Second day postop radiographs showed malposition of left C2 screw (asterisk) ((b) and (c)). Two weeks postop radiographs for follow-up of the fusion condition ((d) and (e)). Six weeks postop open mouth radiograph revealed loosening of left C2 screw (f).