Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

500 Small Animal Radiolo g y and Ultrasono graphy
Fig. 4-31 A, Postoperative radiographs of the left radius and ulna of a 2-
year-old female Greyhound. The previously illustrated fracture (see Fig.
4-4) has been repaired by means of a seven-hole dynamic-compression
bone plate. There is excellent alignment and apposition of the radial fracture
fragments. There is slight malalignment of the distal ulna. All screws
except the most proximal one appear to engage the caudal radial cortex.
B, Follow-up radiographs obtained 6 weeks after the surgical repair show
exuberant callus formation around the distal ulna. There is minimal callus
formation around the radius. Increased bony density is present
between the screws. This represents normal healing. Note that the radius,
which is rigidly stabilized, has a minimal amount of callus with disappearance
of the fracture line while the ulna, which was less well stabilized,
exhibits a greater amount of callus. The absence of soft-tissue swelling
and bony destruction indicates that the ulna is healing normally without
infection.
Continued
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B