What is your diagnosis? The navicular bone (distal sesamoid) is displaced proximally because of an avulsion fracture at the attachment of the impar ligament.
Baird
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Department of Large Animal Medicine and Surgery, Texas Veterinary Medical Center, College of Veterinary Medicine, Texas A&M University, College Station 77843-4475.
Behrens
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Morris
L
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Auer
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JA
D000818:Animals; D050723:Fractures, Bone / Q000000981:diagnostic imaging / Q000662:veterinary*; D006734:Horse Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006736:Horses; D007794:Lameness, Animal / Q000209:etiology; D008297:Male; D011859:Radiography; D013639:Tarsal Bones / Q000000981:diagnostic imaging / Q000293:injuries*