Figure 2. Cervical spine computed tomography, mid-sagittal section.

Cerclage wire (arrowheads) is evident from her previous procedure which was placed from the C1 posterior arch to the C2 spinous process with interposed autograft bone. Mild disc herniations are evident at C3/4 and C4/5, while the C5/6 disc space is severely narrowed and posteriorly has a disc-osteophyte complex (arrow), which causes mild narrowing of the spinal canal at this level to 8 millimeters in anteroposterior diameter and mild osteophytic encroachment of the left C5/6 neuroforamina (not shown). Interspinous narrowing and pseudoarticulation is evident between the C2 and C3 spinous processes (*). A slight focal kyphosis from C1 to C4 is also evident.