Table 2 Cross-sectional area of the superior cluneal nerve at different branches and sides
Asymptomatic volunteers (n = 30) | Patients (n = 36) | |||||
|---|---|---|---|---|---|---|
Right side | Left side | p value (R. vs. L.) | Painful side | Non-painful side | p value (P. vs. N.) | |
Cross-sectional area (mm2) | ||||||
Medial branch | ||||||
Baseline | 5.27 ± 1.99 (4.51 to 6.02) | 4.88 ± 1.95 (4.15 to 5.61) | 0.094 | 5.04 ± 1.34 (4.57 to 5.50) | 4.93 ± 1.32 (4.43 to 5.42) | 0.125 |
1st post-injection month | – | – | – | 5.32 ± 1.57 (4.78 to 5.86) | 5.13 ± 1.40 (4.65 to 5.61) | 0.555 |
3rd post-injection month | – | – | – | 5.44 ± 1.86 (4.80 to 6.08) | 5.09 ± 1.32 (4.63 to 5.54) | 0.287 |
Intermediate branch | ||||||
Baseline | 5.08 ± 1.96 (4.34 to 5.83) | 4.95 ± 2.03 (4.20 to 5.71) | 0.284 | 5.28 ± 1.72 (4.68 to 5.88) | 5.29 ± 1.52 (4.73 to 5.86) | 0.513 |
1st post-injection month | – | – | – | 5.37 ± 1.66 (4.80 to 5.94) | 5.25 ± 1.39 (4.77 to 5.73) | 0.471 |
3rd post-injection month | – | – | – | 5.35 ± 1.25 (4.91 to 5.78) | 5.35 ± 1.51 (4.83 to 5.87) | 0.719 |
Lateral branch | ||||||
Baseline | 4.90 ± 2.14 (4.08 to 5.71) | 4.69 ± 2.02 (3.94 to 5.45) | 0.336 | 5.56 ± 1.43 (5.06 to 6.06) | 5.67 ± 1.48 (5.11 to 6.22) | 0.272 |
1st post-injection month | – | – | – | 5.59 ± 1.46 (5.09 to 6.09) | 5.78 ± 1.82 (5.15 to 6.41) | 0.376 |
3rd post-injection month | – | – | – | 5.52 ± 1.35 (5.06 to 5.98) | 5.55 ± 1.52 (5.03 to 6.08) | 0.838 |