Pathogenesis of canine aural hematomas

Morphologic examination of 3 ears from 2 dogs with aural hematomas revealed that the hematomas had developed within the pinnal cartilage. The cartilage had fractured from perichondrium to perichondrium and in some areas clefts had formed within the cartilage. Cartilage fracture could have resulted f...

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Bibliographic Details
Published in:	Journal of the American Veterinary Medical Association Vol. 185; no. 8; p. 873
Main Authors:	Dubielzig, R R, Wilson, J W, Seireg, A A
Format:	Journal Article
Language:	English
Published:	United States 15-10-1984
Subjects:	Animals Dog Diseases - etiology Dog Diseases - pathology Dogs Ear Cartilage - injuries Ear Diseases - etiology Ear Diseases - pathology Ear Diseases - veterinary Ear, External - injuries Fractures, Cartilage - etiology Fractures, Cartilage - pathology Fractures, Cartilage - veterinary Hematoma - etiology Hematoma - pathology Hematoma - veterinary
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Summary:	Morphologic examination of 3 ears from 2 dogs with aural hematomas revealed that the hematomas had developed within the pinnal cartilage. The cartilage had fractured from perichondrium to perichondrium and in some areas clefts had formed within the cartilage. Cartilage fracture could have resulted from wave motions set up in the pinna during head shaking. An explosive burst of head shaking exceeding a critical head velocity or a more gentle but sustained head shaking establishing a sinusoidal wave motion within the ear could have caused cartilage fracture.
ISSN:	0003-1488