Dubielzig R R, Wilson J W, Seireg A A
J Am Vet Med Assoc. 1984 Oct 15;185(8):873-5.
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.
对2只患有耳廓血肿的犬的3只耳朵进行形态学检查发现，血肿发生于耳廓软骨内。软骨从软骨膜到软骨膜发生了断裂，在某些区域软骨内形成了裂隙。软骨骨折可能是由于摇头时耳廓内产生的波动所致。超过临界头部速度的剧烈摇头爆发或在耳内建立正弦波运动的较为轻微但持续的摇头可能导致软骨骨折。
