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Vorkommen von lumbosakralen Übergangswirbeln in Österreich bei den Rassen Dobermann, Dogo Argentino, Hovawart, Landseer, Leonberger, Neufundländer, Rhodesian Ridgeback und Rottweiler anhand der routinemäßigen Untersuchung auf Hüftgelenksdysplasie zur Zuchtzulassung in den Jahren 2000 bis 2010.
Incidence of the lumbosacral transitional vertebra within the breeds of Dobermann, Dogo Argentino, Hovawart, Landseer, Leonberger,Newfoundland, Rhodesian Ridgeback, and Rottweiler on radiographs required for evaluation for canine hip dysplasia between 2000 and 2010
Diplomarbeit, Vet. Med. Univ. Wien, pp. 73.
The lumbosacral transitional vertebra is a congenital anomaly which appears at the
junction of two major divisions of the vertebral column and may possess characteristics
typical of either division (MORGAN, 1968). There are discussions about the clinical
relevance of this congenital malformation. An 8 times higher risk is described for German
Shepherd Dogs to develop CES than other breeds by FLÜCKIGER et al. (2006c).
Furthermore MORGAN (1993) published a statistic evidence for association between the
lumbosacral transitional vertebra and CES. In addition FLÜCKIGER et al. (2006c) presented
results, showing that dogs with a lumbosacral transitional vertebra develop CES one to
two years earlier than dogs without. The study of FLÜCKIGER et al. (2006b) presented,
that an asymmetrical transitional vertebra could indicate a differently affected hip
dysplasia on each side of the hip.
The main aim of this study is to determine the incidence of the lumbosacral transitional
vertebra within the breeds of Doberman, Dogo Argentino, Hovawart, Landseer,
Leonberger, Newfoundland, Rhodesian Ridgeback and Rottweiler on radiographs,
required for evaluation for canine hip dysplasia between 2000 and 2010. Furthermore an
association between the anomaly and hip dysplasia should be investigated. Altogether
1026 dogs were evaluated using radiographs acquired whilst screening for canine hip
dysplasia. The results have not shown any relation between gender and any anomaly and
no statistical association between hip dysplasia and lumbosacral transitional vertebra.
The highest incidences in this study are 41,3% for the Rhodesian Ridgeback followed by
20,7% for the Rottweiler. In 25,5% of the cases it was not possible to evaluate the
radiographs. Due to the size of the described breeds it is sometimes difficult to include all
relevant anatomical structures on a single film.
More studies concerning the clinical relevance of this anomaly are needed. Evaluation
and collection of data of the lumbosacral region on every radiograph taken whilst
screening for hip dysplasia could be helpful for further investigation of the inheritance of
this anomaly. For the clinical relevance the data has to be merged, with data of
neurologic and orthopedic examinations, resulting in possible recommendations for