Modified Bromage scale
| Score | Criteria |
| 1 | Complete block (unable to move knee or feet) |
| 2 | Almost complete block (able to move feet only) |
| 3 | Partial block (able to move knee only) |
| 4 | Detectable weakness of hip flexion while supine (full flexion of knee) |
| 5 | No detectable weakness of hip flexion while supine |
| 6 | Able to perform partial knee bend |