The analysis of elbow radiographs of 21 272 dogs, examined during 1988-2005, enabled us to estimate the frequency of canine elbow dysplasia in 90 breeds of dogs. Relation between breeds and incidence of elbow dysplasia was established statistically. The percentage of affected specimens was surprisingly low at 0.7% (150 dogs), and distinctly lower than the percentages reported by several authors in Germany, the USA, and other countries. The highest number of dogs affected was found in 47 (1.7% of total number studied) German Shepherds, in 25 Rottweilers (2%), and in 17 Dachshunds (0.5%). Breeds most often affected were of FCI group II, namely English Mastiffs (9%), Dogue de Bordeaux (8.5%), Neapolitan Mastiffs (8.3%), and Newfoundlands (4.6%). Elbow dysplasia was also found with significant frequency in breeds of the FCI group VIII - Labrador Retrievers (4.3%) and Golden Retrievers (4.4%). Fragmented coronoid process (FCP) was most frequently diagnosed (58.0% out of 150 affected specimens). Ununited anconeal process (UAP), was diagnosed in 32.0%. FCP and UAP together were present in 6.7% of the dysplastic specimens. No cases of osteochondritis dessecans and joint incongruity were found. UAP cases were most common in German Shepherds, while FCP occurred most frequently in Dogues de Bordeaux and Rottweilers.
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