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126 SECTION I III The Birds
A
B
Figure 12-2 • Subacute fracture-dislocation in an owl. A, Ventrodorsal close-up shows a fully dislocated proximal radius and a badly
comminuted, partially dislocated proximal ulna. The pronounced density loss in the ulna is due to avascular necrosis. B, A negative image
accentuates the described ulnar bone loss, as well as the subcapital radial fracture, which appears as a dark overlap band.
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