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Table 3 Advanced diagnostic imaging findings in dogs with lumbosacral transitional vertebra (LTV) types 2 and 3

From: Transitional lumbosacral vertebrae in black Norwegian elkhound and Brittany dogs: Clinical findings and its association with degenerative lumbosacral stenosis

Dog No.

Breed

Sex

LTV

No. L

No. Sc

Sacr

DLSS

D.disc

Spon

Prot

IVFS

Sacr FS

Sacroil

Tele

Sum

1

N

M

3

7

3

 

16

0

0

0

0

1

1

0

2

4

N

M

3

8

2

2

16

0

1

0

0

1

0

0

2

5

N

F

3

8

3

 

16

0

0

0

0

0

1

0

1

6

B

F

3

7

2

2 + 1

15

1

0

0

0

1

1

0

3

7

B

F

3

7

3

 

16

0

1

1

0

1

1

0

4

9

B

F

3

8

2

2 + 1

16

1

0

0

0

1

0

0

2

10

B

F

3

8

3

 

15

0

1

1

0

0

1

1

4

14

B

M

2

8

3

 

15

1

0

0

0

1

0

0

2

15

B

F

2

6

2

2

16

0

0

1

0

0

0

0

1

16

B

M

2

7

2

2 + 1

16

0

0

1

0

0

1

1

3

17

B

M

2

6

2

2 + 1

15

0

0

1

1

1

1

1

5

  1. The table presents the distribution of lumbosacral transitional vertebra (LTV) in two dog breeds (n = 11). LTV was classified from ventrodorsal radiographs into four types: Type 0 indicates normal lumbosacral anatomy; Type 1 is characterised by an independent spinous process of the first sacral vertebra, separated from the medial sacral crest; Type 2 is symmetrical, with transverse processes partially fused with the sacrum or ilium, but the vertebral body remains separate from the sacrum; and Type 3 is asymmetrical, with one side resembling a lumbar vertebra and the other a sacral wing articulating with the ilium [8]. The table also includes data on sex, the number of lumbar vertebrae, and the number of fused sacral bones. The number of lumbar vertebrae was counted on neutral lateral radiographs, starting from the last thoracic vertebra (which is not included in the count). Additionally, it provides each dog’s degenerative lumbosacral stenosis score and findings from advanced diagnostic imaging (CT and MRI). Dog No., Dog number; B, Brittany; N, Norwegian Elkhound black; M, male; F, female; No. L, number of lumbar vertebrae; No. Sc; numbers of fused sacral vertebrae; Sacr, sacral formula 2 + 1 indicating two fused sacral vertebrae partially fused with first coccygeal vertebra; DLSS, degenerative lumbosacral stenosis score [60]; The following parameters are related to findings during advanced diagnostic imaging, where 0 = no finding and 1 = finding; D. disc, degenerated disc; Spon, spondylosis; Prot, disc protrusion; IVFS, intervertebral foramen stenosis; Sacr FS, stenosis of the first sacral foramen; Sacroil, Sacroiliac joint; Tele, telescoping lumbosacral joint; Sum, the total sum of advanced diagnostic imaging findings