Osseous-associated cervical spondylomyelopathy in dogs: 27 cases (2000-2012).
OBJECTIVE
To evaluate the signalment, neurologic examination and imaging findings, and outcome in dogs treated medically or surgically for osseous-associated cervical spondylomyelopathy (OACSM).


METHODS
Retrospective case series.


METHODS
27 client-owned dogs.


METHODS
Medical records for dogs with OACSM (diagnosis made in 2000 through 2012) were reviewed. Collected data included signalment, neurologic examination findings (graded from 0 [normal] to 5 [tetraplegia]), imaging findings, treatment, and outcome. From MRI and CT images, measurements were obtained for subjective grading of spinal cord compression.


RESULTS
Among the 27 dogs, the median age was 2 years; there were 15 Great Danes, 3 Mastiffs, 3 Newfoundlands, and 6 other large-breed dogs. For medically treated dogs (n = 7), the median initial neurologic grade was 2; for surgically treated dogs (20), the median initial neurologic grade was 3. Magnetic resonance imaging revealed dorsolateral spinal cord compression in 22 dogs and lateral spinal cord compression in 5 dogs. Dogs with more severe compressions were slightly more likely to undergo surgical than medical treatment. Median survival time of medically treated dogs was 43 months, and that of surgically treated dogs was 60 months. Fifteen of 19 dogs treated surgically had improved neurologic grades at 4 to 8 weeks after surgery and had a good to excellent long-term outcome.


CONCLUSIONS
Surgical treatment of dogs with OACSM resulted in neurologic improvement and was associated with a good long-term outcome. For dogs that received medical treatment, neurologic deterioration continued but some patients did well for several years.
Departments of Medical Sciences, University of Wisconsin, Madison, WI 53706.
Joy A Delamaide
JA
Gasper
Helena
H
Rylander
Jennifer L
JL
Stenglein
Kenneth R
KR
Waller
D000818:Animals; D002574:Cervical Vertebrae / Q000473:pathology*; D019299:Decompression, Surgical / Q000662:veterinary; D004283:Dog Diseases / Q000473:pathology* / Q000628:therapy; D004285:Dogs; D005260:Female; D008279:Magnetic Resonance Imaging; D008297:Male; D009192:Myelography / Q000662:veterinary; D012189:Retrospective Studies; D013117:Spinal Cord Compression / Q000188:drug therapy / Q000601:surgery / Q000662:veterinary*; D016896:Treatment Outcome