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98 SECTION I III The Birds

A

B
Figure 10-6 • A, Orientation, close (B), and ultraclose (C) ventrodorsal views of a nonunion fracture in the right humeral midshaft of a
Swainson’s hawk show a classical nonpurposeful callus, which has formed near the misaligned ends of both fragments but failed to bridge
the fracture gap. D, A leading edge projection shows the development of a false joint situated between the rocker end of the proximal
fragment and the new bone situated along the medial edge of the distal fragment.

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