TABLE 5.

Summary of clinical and magnetic resonance imaging findings for 35 large breed dogs diagnosed with cervical spondylomyelopathy because of a combination of osseous‐associated and disc‐associated spinal cord compressions.

Age	≤7 years	>7 years
Number (n) of dogs	19	16
Sex	12/19 females (63%); 7/19 males (37%)	9/16 males (56%); 7/16 females (44%)
Acute vs chronic	Chronic (n = 17, 90%); acute (n = 2, 11%)	Chronic (n = 12, 75%); acute (n = 4, 25%)
Mean (median) duration of clinical signs	111 (61) days	87 (43) days
Neurologic grade a	Grade 3 (n = 6, 32%); grade 4 (n = 6, 32%); grade 2 (n = 6, 32%); grade 1 (n = 1, 5%)	Grade 3 (n = 6, 38%); grade 4 (n = 6, 38%); grade 5 (n = 2, 13%); grade 2 (n = 1, 6%); grade 1 (n = 1, 6%)
Main site of spinal cord compression	C6‐C7 (n = 13, 68%); C5‐C6 (n = 4, 21%); C4‐C5 (n = 1, 5%); C3‐C4 (n = 1, 5%)	C6‐C7 (n = 8, 50%); C5‐C6 (n = 7, 44%); C4‐C5 (n = 1, 6%)
Severity of main compression site	Grade 2 (n = 8, 42%); grade 3 (n = 7, 37%); grade 1 (n = 4, 21%)	Grade 2 (n = 8, 50%); grade 3 (n = 7, 44%); grade 1 (n = 1, 6%)
Dogs with T2W hyperintensity in spinal cord parenchyma	14/19 (74%)	8/16 (50%)
Dogs with T1W hypointensity in spinal cord parenchyma	4/19 (21%)	0

Note: Dogs were grouped according to median age.

^a Neurologic grading system: grade 1 (cervical hyperesthesia only), grade 2 (mild pelvic limb ataxia or paresis ± thoracic limb involvement), grade 3 (moderate pelvic limb ataxia or paresis ± thoracic limb involvement), grade 4 (marked pelvic limb ataxia or paresis with thoracic limb involvement), grade 5 (tetraparesis with inability to stand or walk without assistance).