Publikationsdatenbank

Lumbosacral transitional vertebrae in dogs (2018)

Art

Hochschulschrift

Autor

Gong, He (WE 20)

Quelle

Berlin: Mensch und Buch Verlag Berlin, 2018 — VI, 121 Seiten

ISBN: 978-3-86387-932-7

Sprache

Englisch

Verweise

URL (Volltext): https://refubium.fu-berlin.de/handle/fub188/25180

Kontakt

Klein- und Heimtierklinik

Oertzenweg 19 b
14163 Berlin
+49 30 838 62422
kleintierklinik@vetmed.fu-berlin.de

Abstract / Zusammenfassung

This study examines the prevalence and morphological features of lumbosacral transitional vertebrae (LTV) and their association with canine hip dysplasia (CHD), coxarthrosis as well as radiographic predictors for cauda equina syndrome (CES). The overall prevalence and the prevalence of different types of LTV were determined by reviewing the pelvic radiographs of 1030 dogs among 63 breeds. LTV was observed in 95 (9.2%) dogs. There was no gender predisposition. Symmetric LTV (65.3%) were more common than asymmetric LTV (34.7%). Most of the asymmetric LTVs had an intermediate type transverse process combined with either a lumbar or sacral type transverse process. The results of the present study indicated that morphological variations of sacroiliac joints, angulation of LTV and pelvic obliquity were common findings in dogs with asymmetric LTV. Moreover, the measurement of transverse process angle (TPA) was first introduced in this study. The value of TPA indicated the contact degree between the transverse process and the pelvis. The difference between the right and left TPA differences of the LTV and the last normal lumbar vertebra was significantly associated with type of LTV (p<0.001). There was a tendency that when this angle difference is >16º or ＜-16º, asymmetric and angulated LTV occurred more frequently. However, the number of cases was too small to have any statistical significance. By using the FCI system to evaluate CHD, a significant association between the LTV and the occurrence and symmetry of the CHD was seen (p<0.01). When each hip joint was given a score to describe hip joint conformation, dogs with type 2/1, 3/2 and 3/1 LTV had higher CHD score difference than other types of LTV. Asymmetric LTV cases had higher average CHD scores of the right and left hips (p<0.05). However, these results were only based on the analysis of only 31 dogs with LTV and CHD, and must be interpreted with caution. There was a statistically significant association between LTV and coxarthrosis (p<0.05). In dogs with asymmetric LTV, 30 (90.9%) dogs had coxarthrosis. In addition, only 5 (5.3%) dogs with LTV had CES. This number was too low for meaningful statistical analysis for the correlation between LTV and CES. 66 of the 95 cases with LTV that had lateral pelvic radiographic were evaluated for lumbosacral (LS) abnormalities. The common occurrences of LS abnormalities were endplate sclerosis (56.1%) and spondylosis deformans (34.9%). There was no correlation between LTV and endplate sclerosis and spondylosis. In conclusion, this study supported the conclusion of other researches, which proposed LTV to be of clinical importance. It is recommended that the presence of LTV and its classification to be an integral part of CHD evaluation for breeding. Both VD and lateral projections should be taken during routine evaluation of LTV.