Table 1 Medical research council sum score: six-point and four-point ordinal scales for assessment
Six-point ordinal scale | Four-point ordinal scale |
|---|---|
0 = no muscle contraction | 0 = paralysis |
1 = flicker or trace of muscle contraction | 1 = severe weakness defined as >50% loss of strength |
2 = active movement with gravity eliminated | |
3 = reduced power but active movement against gravity | 2 = slight weakness <50% loss of strength |
4 = reduced power but active movement against gravity and resistance | |
5 = normal power against full resistance | 3 = normal strength |