| Modified Bromage Scale | |
|---|---|
| Grade | Criteria |
| 1 | Complete block (unable to move feet or knees) |
| 2 | Almost complete block (able to move feet only) |
| 3 | Partial block (just able to move knees) |
| 4 | Detectable weakness of hip flexion while supine |
| 5 | No detectable weakness of hip flexion while supine with full flexion of knees |