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Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

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Chapter Four The Appendicular Skeleton 565<br />

Fig. 4-115 A 15-month-old male Chesapeake Bay Retriever presented<br />

with an 8-month history of lameness in the right front leg. A, A lateral<br />

view of the shoulder reveals an area of flattening that involves the caudal<br />

aspect of the right humeral head (arrow). There is slight sclerosis<br />

surrounding this area of radiolucency. B, The limb was supinated <strong>and</strong> an<br />

additional radiograph was obtained. A large calcified cartilaginous flap<br />

is identified readily. The osteochondral defect <strong>and</strong> flattening of the<br />

humeral head are observed more readily with this positioning.<br />

Diagnosis: Osteochondritis dissecans. A similar lesion was present in<br />

the left shoulder.<br />

A<br />

B

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