Page 56 - Atlas of Small Animal CT and MRI

46 Atlas of Small Animal CT and MRI

Figure 1.3.9 Temporomandibular Fracture–Luxation (Canine) CT
1y MC Lhasa Apso with a history of having
fallen off a ledge. The representative trans-
verse images are ordered from rostral to
caudal. The two images reformatted in the
sagittal plane are oriented in the same direc-
tion for easier comparison. In both images,
rostral is to the left and caudal is to the right.
There is caudal luxation of the left condyloid
process. Although the head position is
symmetrical, the left process is not seen on
the rostral image (a) but comes into view on
a more caudal image (b: arrow). The sagittal
reformatted image of the left temporoman-
dibular joint (c) clearly shows the caudal
(a) CT, TP (b) CT, TP luxation as well as a caudally displaced
fracture of the retroarticular process (c: arrow-
head). The fracture fragment is also evident on
the transverse images (b: arrowhead). The
appearance of the right temporomandibular
joint (d) is normal by comparison. Fluid is also
seen within the left external ear canal (b).

(c) CT, SP (d) CT, SP

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