Asymmetrical lumbosacral transitional vertebrae in dogs may promote asymmetrical hip joint development.

@article{Flckiger2017AsymmetricalLT,
  title={Asymmetrical lumbosacral transitional vertebrae in dogs may promote asymmetrical hip joint development.},
  author={Mark A Fl{\"u}ckiger and Frank Steffen and Mike H{\"a}ssig and Joe P. Morgan},
  journal={Veterinary and comparative orthopaedics and traumatology : V.C.O.T},
  year={2017},
  volume={30 2},
  pages={
          137-142
        }
}
OBJECTIVES This study examines the relationship between the morphology of the lumbosacral transitional vertebra (LTV) and asymmetrical development of the hip joints in dogs. [] Key MethodMETHODS A total of 4000 dogs which had been consecutively scored for canine hip dysplasia were checked for the presence of a LTV. A LTV was noted in 138 dogs and classified depending on the morphology of the transverse processes and the degree of contact with the ilium.

Figures and Tables from this paper

Prevalence of lumbosacral transitional vertebrae in dogs in Berlin.
TLDR
It is demonstrated that laterolateral radiographs are a valuable addition to standard ventrodorsal radiographs and should be included in routine LTV screening protocols to provide a complete evaluation.
THE OCCURRENCE OF LUMBOSACRAL TRANSITIONAL VERTEBRA IN TWO HUNTING BREEDS OF DOGS ITS ASSOCIATION WITH HIP DYSPLASIA
The lumbosacral transitional vertebra (LTV) has become the topic of discussions of veterinarians, breeders and owners of the dogs, especially in connection with genetics and its possible impact on
The Prevalence of Feline Hip Dysplasia, Patellar Luxation and Lumbosacral Transitional Vertebrae in Pedigree Cats in The Czech Republic
TLDR
The high prevalence of hip Dysplasia in pedigree cats should be considered and screening pedigree cats for hip dysplasia is recommended before they are used in breeding programs.
Lumbosacral transitional vertebrae in cats and its relationship to lumbosacral vertebral canal stenosis
TLDR
Despite lumbosacral stenosis being a rare spinal condition in cats, lumbOSacral transitional vertebrae can be considered a risk factor for its development.
The slope of the pelvis is variable in dogs but does not show correlation with femoral subluxation.
TLDR
It is indicated that there are significant individual and interbreed variations in the slope of the pelvis, however, no significant relationship between the slope and femoral subluxation could be identified.
Genetic of lumbosacral transitional vertebrae in German shepherd dogs
TLDR
Results of comprehensive genetic analyses enable the development of breeding measures against lumbosacral transitional vertebrae to reduce their prevalence and support management of potentially correlated diseases in German shepherd dogs.
Lumbosacral Biometrics and its Relevance to Patient-Specific Evaluation of Bone Mechanical Strength in Some Canine Breeds
TLDR
This study used digital radiographs and dissections of cadavers to develop the following biometric parameters of lumbar vertebra 7 and the sacrum: Area-Mean Grey Value Ratio (AMR) and Height-Length Ratio (HLR).
Radiographic evaluation of congenital vertebral anomalies in Korean raccoon dogs (Nyctereutes procyonoides koreensis)
TLDR
It was showed that TTV is common in Korean raccoon dogs, and that the vertebral formula is relatively diverse, which is almost similar to normal rib to be confused the radiographic evaluation.
C7 vertebra homeotic transformation in domestic dogs – are Pug dogs breaking mammalian evolutionary constraints?
The number of cervical vertebrae in mammals is almost constant at seven, regardless of their neck length, implying that there is selection against variation in this number. Homebox (Hox) genes are
Comparing Hip Dysplasia in Dogs and Humans: A Review
TLDR
The anatomy, etiology, pathogenesis, diagnostics, and treatment of HD in humans and dogs is described and most of the differences can be explained by the evolutionary differences between dogs and humans.
...
...

References

SHOWING 1-10 OF 32 REFERENCES
Lumbosacral transitional vertebrae in dogs: classification, prevalence, and association with sacroiliac morphology.
TLDR
It is hypothesized that an LTV is not the result of transformation of a lumbar into a sacral vertebra or vice versa, but rather is an autonomous intermediate type of vertebra, including the asymmetric variations.
Transitional lumbosacral vertebral anomaly in the dog: a radiographic study.
  • J. Morgan
  • Medicine
    The Journal of small animal practice
  • 1999
TLDR
The frequency of this condition within a large clinical population and the radiographic features used in its detection are reported and it is thought to have clinical significance and should be selected against in breeding, especially in the GSD.
Lumbosacral transitional vertebrae, canine hip dysplasia, and sacroiliac joint degenerative changes on ventrodorsal radiographs of the pelvis in police working German shepherd dogs.
TLDR
It has been shown that dogs with LTV have a higher frequency of severe CHD, and a higher percentage of sacroiliac joint degenerative changes was observed in dogs with no signs of LTV and in working dogs.
Lumbosacral transitional vertebrae as a predisposing cause of cauda equina syndrome in German shepherd dogs: 161 cases (1987-1990).
TLDR
The records of 161 German Shepherd Dogs were divided into groups depending on whether there was a radiographic diagnosis of degenerative disk disease and whether the dogs had cauda equina syndrome (CES), and statistical analysis of the data suggested an association between TVS and CES and an associations between DDD and CES.
Alternative classification and screening protocol for transitional lumbosacral vertebra in German shepherd dogs
TLDR
It is suggested that L8 be included as a part of the LTV complex, and the laterolateral radiographs of the lumbar spine be considered as an addition to ventrodorsal projections in the screening protocols for LTV.
The transitional vertebra of the lumbosacral spine: its radiological classification, incidence, prevalence, and clinical significance.
TLDR
Interim results from a series of studies of the lumbosacral region of the spine show that there is no relation between an LSTV and low backache.
Bone dysplasias in the labrador retriever: a radiographic study.
TLDR
A radiographic study of the humeral head, elbow joint, hip joint, stifle joint, tarsal joint, and lumbosacral (LS) junction was performed in 1,018 Labrador retrievers in search of elbow and hip dysplasia; elbow and Hip dysplasias; and transitional LS vertebrae.
Lumbosacral Transitional Vertebrae
The relationship between low back pain with sciatic radiation and the presence of lumbosacral transitional vertebrae has been the subject of much discussion during the last 20 years, but so far its
Lumbosacral Transitional Vertebrae and Their Relationship With Lumbar Extradural Defects
TLDR
A new classification of lumbosacral transitional vertebra is presented based upon the morphologic and clinical characteristics with respect to herniated nucleus pulposus based on patients with positive myelographic findings of herniate lumbar disc.
...
...