Number of different nerve root blocksa
| Nerve Root | All Indications | Diagnostic Indication | Therapeutic Indication | ||||||
|---|---|---|---|---|---|---|---|---|---|
| No. | + | − | No. | + | − | No. | + | − | |
| C3 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
| C4 | 4 | 3 | 1 | 3 | 2 | 1 | 1 | 1 | 0 |
| C5 | 3 | 1 | 2 | 3 | 1 | 2 | 0 | 0 | 0 |
| C6 | 22 | 16 | 6 | 14 | 9 | 5 | 8 | 7 | 1 |
| C7 | 13 | 10 | 2 | 12 | 9 | 3 | 1 | 1 | 0 |
| C8 | 10 | 9 | 1 | 5 | 4 | 1 | 5 | 5 | 0 |
| Σ | 53 | 40 | 13 | 38 | 26 | 12 | 15 | 14 | 1 |
a + indicates evaluated as a positive block; −, evaluated as a negative block.