From: Neurophysiologic evaluation of patients with cervical spondylotic myelopathy
Variables | H-reflex | Cutaneous silent period (ms) | Cortical silent period (ms) | |||
---|---|---|---|---|---|---|
latency, (ms) | H/M AR | Onset | Duration | Onset | Duration | |
Gender | ||||||
Male | 18.03 ± 2.28 | 0.38 ± 0.18 | 82.71 ± 17.06 | 33.48 ± 8.06 | 55.47 ± 9.0 | 53.93 ± 15.21 |
Female | 17.5 ± 2.06 | 0.2 ± 0.08 | 83.42 ± 12.45 | 30.91 ± 5.14 | 49.97 ± 6.4 | 53.28 ± 14.35 |
p-value | 0.664 | 0.046* | 0.928 | 0.484 | 0.194 | 0.764 |
Occupation | ||||||
Workers | 19.1 ± 2.98 | 0.32 ± 0.11ab | 75.1 ± 19.33 | 34.58 ± 9.87 | 52.5 ± 10.85 | 51.17 ± 16.74 |
Housewives | 17.88 ± 2.17 | 0.15 ± 0.06b | 88.1 ± 4.80 | 30.90 ± 5.75 | 48.76 ± 6.35 | 52.1 ± 14.84 |
Officers | 17.43 ± 0.51 | 0.47 ± 0.40a | 93.88 ± 15.32 | 29.58 ± 6.25 | 57.68 ± 3.31 | 62.7 ± 16.23 |
Others | 16.9 ± 1.75 | 0.38 ± 0.84ab | 78.36 ± 14.03 | 34.8 ± 6.5 | 57.38 ± 9.24 | 49.46 ± 9.74 |
p-value | 0.473 | 0.153 | 0.212 | 0.636 | 0.328 | 0.558 |
Nurick grade | ||||||
1 | 18.0 ± 2.83 | 0.30 ± 0.14 | 81.50 ± 9.90a | 33.0 ± 8.48 | 51.65 ± 7.27 | 42.55 ± 3.61 |
2 | 17.38 ± 1.62 | 0.36 ± 0.26 | 89.62 ± 11.62a | 33.15 ± 6.5 | 51.65 ± 11.95 | 56.67 ± 14.33 |
3 | 17.85 ± 2.55 | 0.28 ± 0.13 | 70.17 ± 12.94b | 33.3 ± 8.83 | 52.53 ± 9.54 | 52.69 ± 16.51 |
4 | 21.7 ± 0.00 | 0.30 ± 0.0 | 108.0 ± 0.0c | 23.7 ± 0.00 | 60.1 ± 0.0 | 45.0 ± 0.0 |
p-value | 0.339 | 0.912 | 0.011* | 0.689 | 0.850 | 0.603 |
MRI lesion | ||||||
C3–C4 | 18.95 ± 3.08 | 0.40 ± 0.11 | 71.02 ± 17.46a | 40.2 ± 8.17a | 50.6 ± 12.47 | 56.75 ± 19.38 |
C4–C5 | 16.0 ± 0.0 | 0.23 ± 0.11 | 75.12 ± 11.84a | 27.8 ± 3.31b | 56.95 ± 9.62 | 53.15 ± 13.78 |
C5–C6 | 18.09 ± 2.11 | 0.27 ± 0.12 | 86.78 ± 11.59ab | 33.31 ± 6.13ab | 52.07 ± 7.23 | 48.38 ± 10.33 |
C6–C7 | 17.65 ± 0.5 | 0.5 ± 0.56 | 97.6 ± 16.39b | 27.5 ± 5.73b | 59.2 ± 1.56 | 63.53 ± 19.77 |
p-value | 0.372 | 0.362 | 0.069 | 0.037* | 0.475 | 0.450 |