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Vet Surg. 2011 Dec;40(8):1029-32. doi: 10.1111/j.1532-950X.2011.00876.x. Epub 2011 Sep 28.

Thoracic kyphosis associated with hemivertebra.

Author information

1
Department of Surgery, Ecole Nationale Vétérinaire d'Alfort, Maisons Alfort Cedex, France. pmoissonnier@vet-alfort.fr

Abstract

OBJECTIVE:

To radiographically assess the influence of thoracic hemivertebra on kyphosis and neurologic status in 45 dogs.

STUDY DESIGN:

Case series.

ANIMALS:

French Bulldogs without neurologic signs (n = 41) and 4 dogs with compressive spinal cord disease associated with hemivertebra.

METHODS:

Thoracic spinal radiographs were divided into 3 groups: 1 = dogs with no hemivertebra, 2 = dogs with hemivertebra but no associated neurologic signs, and 3 = dogs with hemivertebra associated with clinical signs. Vertebral canal height, vertebral column angle, and the step between 2 adjacent vertebrae were measured in each group.

RESULTS:

Vertebral canal height was not significantly different in the 3 groups; however, mean vertebral column angle was significantly (P < .001) different between groups 1 (178°) and 2 (169°), and group 3 (133°). Median cranial step was significantly different between groups (P < .001): 0 mm (group 1), 0.3 mm (group 2), 3 mm (group 3).

CONCLUSIONS:

Vertebral canal height does not differ between normal dogs and dogs with thoracic hemivertebra. There is an important association between neurologic signs and kyphosis and subluxation.

CLINICAL RELEVANCE:

Vertebral realignment without vertebral canal opening could lead to spinal cord decompression in dogs affected by thoracic hemivertebra.

[Indexed for MEDLINE]

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