Nurick Scale.
| Grade 0 | Signs or symptoms of root involvement but without evidence of spinal cord disease |
| Grade 1 | Signs of spinal cord disease but no difficulty in walking |
| Grade 2 | Slight difficulty in walking that did not prevent full-time employment |
| Grade 3 | Difficulty in walking that prevented full-time employment or the ability to perform all housework but that was not severe enough to require someone else’s help to walk |
| Grade 4 | Able to walk with someone else’s help or the aid of a frame |
| Grade 5 | Chair bound or bedridden |
The higher the grade, the more severe the deficit.