Nurick classification of disability in cervical spondylotic myelopathy.
| Grade 0 | Root signs and symptoms. No evidence of spinal cord involvement |
| Grade 1 | Signs of spinal cord involvement, but no difficulty walking |
| Grade 2 | Slight difficulty walking that does not prevent full-time employment |
| Grade 3 | Difficulty walking that prevents full-time employment or the ability to perform all housework, but that was not severe enough to require someone else 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 |