Hypertrophic Osteodystrophy in Two Red Wolf (Canis rufus) Pups

Figure 1

Radiographs and gross photograph obtained of the right distal limb from the red wolf pup of case 1 depicting characteristic bone lesions consistent with hypertrophic osteodystrophy. (a) Lateral radiograph day 9. The distal radial and ulnar metaphyses are distally flared with severe, well-defined, and irregular to palisading periosteal bone formation and medullary sclerosis. An irregular zone of lucency is present proximal to the distal radial physis. (b) Lateral radiograph day 62. There is reduction of the prior distal radial and ulnar periosteal bone formation and medullary sclerosis. The distal radial subphyseal linear lucency is no longer present. (c) Postmortem gross image of the right radius demonstrating well-defined, irregular periosteal bone formation at the metaphysis.

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