Retrospective analysis of case records from dogs and cats diagnosed with supracondylar or distal diaphyseal humeral fractures was performed. Complications were compared and outcome was assessed at final follow-up and by owner questionnaire. A total of 37 cases (25 dogs and 12 cats) were included. Methods used consisted of plates and screws or external skeletal fixator (ESF). The ESF was associated with a significantly higher rate of minor complications (14/22) compared with plates and screws (2/15). There was no difference in major or catastrophic complications between fixation methods. Major complications occurred in 4/37 cases and catastrophic complications occurred in 3/37 cases. Good or excellent outcome was achieved in 24/33 of cases. There was no difference in outcome between dogs and cats. Plates and screws or ESF can be successful methods of managing supracondylar and distal diaphyseal humeral fractures in dogs and cats. Prognosis may be more guarded, however, than previously reported.
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