Figure 18c. Odontoid fracture fixation. (a) Lateral radiograph of the cervical spine obtained after surgery shows fixation of an odontoid base fracture by an odontoid screw and a sublaminar wire between C-1 and C-2. Note the surgical drain in the posterior aspect of the neck, the gown snaps, and dental fillings. (b, c) Frontal (b) and lateral (c) radiographs of the cervical spine in a patient with rheumatoid arthritis show an occipital-spinal strut with posterior wiring used to stabilize the cervical spine and subluxation of C-1 to C-2. There is vertebral body ankylosis (arrows in c) from the rheumatoid arthritis.