Canine humeral intracondylar fissure: a review
Humeral intra-condylar fissure (HIF), also known as incomplete ossifi cation of the humeral condyle, is characterised by the presence of a mid-sagittal fissure in the humeral condyle, which has been shown to predispose affected dogs to condylar fractures. Studies have shown that spaniel breeds are over-represented, although other breeds may also be affected. Severity of clinical signs is variable, ranging from no apparent lameness (silent) to cases of severe lameness on presentation or, ultimately, condylar fracture. The condition can be bilateral. Mean age at presentation is between three and four years, although, dogs up to seven years of age have been diagnosed with the condition. Diagnosis is achieved by means of observing a radiolucent line within the humeral condyle, usually by either radiography or computed tomography. Prophylactic treatment relies on the placement of a transcondylar screw to stabilise and strengthen the humeral condyle and thus mitigate the risk of fracture.
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