Table 4.
Nerve-wise correlation between NCS pattern and USG measured cross-sectional areas among cases
| SN | Nerve | Normal NCS | Axonal | Demyelinating | Mixed | Not recordable | Not done | Statistical significance | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n | Mean | SD | n | Mean | SD | n | Mean | SD | n | Mean | SD | n | Mean | SD | n | Mean | SD | F | ‘p’ | ||
| Median Nerve | |||||||||||||||||||||
| 1. | Proximal | 59 | 7.61 | 1.96 | 5 | 7.20 | 1.10 | 23 | 7.43 | 1.97 | 7 | 8.29 | 2.69 | 0 | - | - | 6 | 7.33 | 2.34 | 0.317 | 0.866 |
| 2. | Distal | 59 | 8.59 | 2.31 | 5 | 8.20 | 1.30 | 23 | 9.39 | 2.48 | 7 | 12.57 | 2.88 | 0 | - | - | 6 | 9.83 | 4.71 | 4.226 | 0.003 |
| 3. | δ | 59 | 1.39 | 1.52 | 5 | 1.00 | 0.71 | 23 | 2.22 | 2.04 | 7 | 4.29 | 1.98 | 0 | - | - | 6 | 3.17 | 4.17 | 4.993 | 0.001 |
| Ulnar Nerve | |||||||||||||||||||||
| 1. | Proximal | 63 | 5.68 | 1.54 | 6 | 5.67 | 1.37 | 16 | 5.50 | 1.15 | 8 | 7.75 | 1.58 | 1 | 7.00 | - | 6 | 5.67 | 1.63 | 3.102 | 0.012 |
| 2. | Distal | 63 | 6.89 | 2.30 | 6 | 6.17 | 1.83 | 16 | 6.31 | 1.30 | 8 | 11.50 | 5.55 | 1 | 11.00 | - | 6 | 6.00 | 1.41 | 6.155 | <0.001 |
| 3. | δ | 63 | 1.40 | 1.54 | 6 | 0.83 | 0.75 | 16 | 1.06 | 1.00 | 8 | 4.00 | 4.66 | 1 | 4.00 | - | 6 | 1.00 | 0.63 | 3.780 | 0.004 |
| Common Peroneal Nerve | |||||||||||||||||||||
| 1. | Proximal | 53 | 9.42 | 3.79 | 18 | 9.94 | 2.90 | 2 | 11.50 | 0.71 | 2 | 10.00 | 2.83 | 18 | 11.33 | 4.45 | 7 | 14.00 | 3.56 | 2.316 | 0.050 |
| 2. | Distal | 53 | 10.13 | 3.82 | 18 | 10.89 | 3.71 | 2 | 13.50 | 0.71 | 2 | 11.50 | 0.71 | 18 | 12.22 | 4.45 | 7 | 15.86 | 4.30 | 3.169 | 0.011 |
| 3. | δ | 53 | 1.55 | 1.28 | 18 | 1.50 | 1.29 | 2 | 2.00 | 1.41 | 2 | 1.50 | 2.12 | 18 | 2.00 | 2.09 | 7 | 1.86 | 1.35 | 0.345 | 0.884 |
| Tibial Nerve | |||||||||||||||||||||
| 1. | Proximal | 55 | 11.75 | 4.20 | 11 | 15.55 | 5.18 | 8 | 14.75 | 3.65 | 4 | 17.75 | 4.86 | 15 | 12.87 | 3.42 | 7 | 16.14 | 2.54 | 4.037 | 0.002 |
| 2. | Distal | 55 | 11.89 | 4.06 | 11 | 17.00 | 6.20 | 8 | 15.50 | 4.84 | 4 | 17.00 | 7.30 | 15 | 13.60 | 4.93 | 7 | 17.71 | 2.81 | 4.561 | 0.001 |
| 3. | δ | 55 | 1.75 | 2.18 | 11 | 2.00 | 2.05 | 8 | 2.50 | 1.93 | 4 | 2.25 | 2.63 | 15 | 2.47 | 2.90 | 7 | 1.57 | 1.27 | 0.402 | 0.846 |
| Sural Nerve | |||||||||||||||||||||
| 1. | At Lower third leg | 46 | 1.24 | 0.57 | 24 | 1.50 | 0.66 | 0 | - | - | 0 | - | - | 19 | 1.68 | 0.75 | 7 | 1.86 | 0.69 | 3.527 | 0.018 |
NCS, nerve conduction study; SD, standard deviation.