Medical Research Council (MRC) Scale for Assessment of Muscle Power
| Grade | Description |
|---|---|
| 0 | No contraction |
| 1 | Flicker or trace of contraction |
| 2 | Active movement with gravity eliminated |
| 3 | Active movement against gravity |
| 4 | Active movement against gravity and resistance Grades 4-, 4 and 4+ may be used to indicate movement against slight, moderate and strong resistance respectively |
| 5 | Normal power |