The Surgical Treatment Principles of Atlantoaxial Instability Focusing on Rheumatoid Arthritis

Figure 3

Preop lateral radiograph revealed AAI (a). Postop radiographs revealed fixation after operation ((b) and (c)). The operative photo showed LC1-PC2 system (d). The intraoperative CT navigation guided technique for placement screw for C1 (e) and C2 (f).

(a)

(b)

(c)

(d)

(e)

(f)