TABLE 3.
Summary of clinical and magnetic resonance imaging findings for 60 dogs diagnosed with cervical spondylomyelopathy due to a combination of osseous‐associated and disc‐associated spinal cord compressions grouped according to median age.
| Age | ≤7 years | >7 years |
|---|---|---|
| Number (n) of dogs | 29 | 31 |
| Sex | 17 males (59%); 12 females (41%) | 18 males (58%); 13 females (42%) |
| Acute vs chronic | Chronic (n = 26, 90%); acute (n = 3, 10%) | Chronic (n = 23, 74%); acute (n = 8, 26%) |
| Mean (median) duration of clinical signs | 243 (60) days | 136 (61) days |
| Neurologic grade a | Grade 3 (n = 12, 41%); grade 4 (n = 8, 28%); grade 2 (n = 7, 24%); grade 5 (n = 1, 4%); grade 1 (n = 1, 4%) | Grade 3 (n = 9, 29%); grade 4 (n = 12, 39%); grade 5 (n = 6, 19%); grade 2 (n = 3, 10%); grade 1 (n = 1, 3%) |
| Main site of spinal cord compression | C6‐C7 (n = 15, 52%); C5‐C6 (n = 9, 31%); C4‐C5 (n = 3, 10%); C3‐C4 (n = 1, 4%); C2‐C3 (n = 1, 4%) | C6‐C7 (n = 17, 55%); C5‐C6 (n = 11, 35%); C4‐C5 (n = 3, 10%) |
| Severity of main compression site | Grade 3 (n = 15, 52%); grade 2 (n = 8, 28%); grade 1 (n = 6, 21%) | Grade 2 (n = 18, 58%); grade 3 (n = 12, 39%); grade 1 (n = 1, 3%) |
| Dogs with T2W hyperintensity in spinal cord parenchyma | 16/29 (55%) | 17/31 (55%) |
| Dogs with T1W hypointensity in spinal cord parenchyma | 5/29 (17%) | 2/31 (7%) |
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).