Ranawat criteria for pain and neural assessment
| Pain assessment |
| Grade 0: None |
| Grade 1: Mild, intermittent, requiring only aspirin analgesia |
| Grade 2: Moderate; a cervical collar was needed |
| Grade 3: Severe; pain could not be relieved by either aspirin or collar |
| Neural assessment |
| Class I : No neural deficit |
| Class II: Subjective weakness with hyperreflexia and dysaesthesia |
| Class IIIA: Objective findings of paresis and long tract signs, but walking possible |
| Class IIIB: Quadriparesis with resultant inability to walk or to feed oneself |