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Category: Canine
Ununited anconeal process (UAP), elbow dysplasia, elbow dysplasia, bone chip or bone spur
AffectedAnimals:
Dogs.
Overview:
While a normal dog is growing, a piece of the bone in its elbow called the anconeal process fuses with the ulna in the front leg. Dogs that develop an ununited anconeal process fail to form this union. The result of the lack of fusion is instability and irritation in the joint, which leads to arthritis and mild to severe lameness in the affected front limb or limbs. Ununited anconeal process is one of three diseases which are grouped under the heading elbow dysplasia; the other two are osteochondrosis of the elbow, and fragmented medial coronoid process.
A disease of large and giant breed dogs, ununited anconeal process most often affects the German shepherd. The problem also is seen in the Saint Bernard, Irish wolfhound, bassett hound, Newfoundland, Great Pyrenees, Labrador retriever, Great Dane, and others.
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