Cranial thoracic vertebral canal stenosis in three juvenile large-breed brachycephalic dogs treated by unilateral hemilaminectomy.
OBJECTIVE
To describe the surgical treatment and outcome for juvenile dogs with cranial thoracic vertebral canal stenosis treated by unilateral hemilaminectomy.


METHODS
Case series.


METHODS
Three large-breed brachycephalic dogs of various breeds (Dogue de Bordeaux, Australian Bulldog, Boerboel) with neurological signs consistent with a myelopathy of the third thoracic (T) to third lumbar (L) spinal cord segment.


METHODS
Information on clinical presentation, diagnostic imaging, surgical procedures, postoperative complications, recovery and outcome is described.


RESULTS
Neurological signs were present and progressive for two to four weeks prior to surgery and ranged from mild ataxia to paralysis. Cranial thoracic vertebral canal stenosis was diagnosed with computed tomography imaging. Lateral and dorsolateral spinal cord compression was present at multiple sites between T2 and T6. Alternating left and right-sided compressions were common. Surgical treatment was by unilateral, continuous hemilaminectomy over three to six vertebral spaces. Postoperative morbidity was minimal and return of independent ambulation was rapid (median: 13.5 days, range: 2-29 days). Neurological status in one dog worsened four months after surgery due to reoccurrence of osseous compression; unilateral hemilaminectomy was repeated in this dog. Long-term follow-up ranged from six to 10 months; neurological signs had completely resolved in one dog and substantially improved in the other two dogs.


CONCLUSIONS
Unilateral hemilaminectomy was associated with rapid return of independent ambulation and substantial improvement in neurological scores.
Amanda Miller, Small Animal Specialist Hospital, Level 1, 1 Richardson Place, North Ryde, NSW 2113, Australia, E-mail: amiller@sashvets.com.
Amanda
A
Miller
Andrew
A
Marchevsky
D000818:Animals; D003251:Constriction, Pathologic / Q000601:surgery / Q000662:veterinary*; D003398:Craniosynostoses / Q000601:surgery / Q000662:veterinary*; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D007796:Laminectomy / Q000379:methods / Q000662:veterinary*; D013117:Spinal Cord Compression / Q000601:surgery / Q000662:veterinary*
Cranial thoracic vertebral canal stenosis; Molosser; brachycephalic; hemilaminectomy; large-breed dog