Page 312 - Atlas of Small Animal CT and MRI

302 Atlas of Small Animal CT and MRI

Figure 3.2.7 C2 Body Fracture (Canine) CT

(a) CT, TP (b) CT, TP (c) CT, TP

(d) CT, SP (e) CT, SP (f) CT, 3D, VENT

(g) DX, LAT
2y FS Australian Shepherd with cervical pain but no neurologic deficits after running into a fence 9 days previously. Images a–c are
ordered from cranial to caudal at the level of the odontoid process (a: arrowhead), cranial C2, and the midbody of C2. Image d is
reformatted on sagittal midline, and image e is a parasagittal image that includes the odontoid process (e: arrowhead). A displaced,
oblique fracture of the body of the axis is evident (b–f: arrow). Fracture fragment displacement relative to the atlas results in a marked
decrease in vertebral canal diameter (b: asterisk). The fracture is detected on a radiographic image (g: arrowhead), but the level of
vertebral canal compromise cannot be assessed as accurately as with CT. Given the time interval since the injury and the lack of
neurologic signs, the patient was managed conservatively and was lost to follow‐up.

302