Table 3.
MRC Muscle Strength Scale
| Grade | Muscle function | Plane of movement |
|---|---|---|
| 0 | No contraction | – |
| T | Tendons become prominent or feeble contraction felt in the muscle, but not visible movement of the part | – |
| 1 | Moves through partial range of motion | Horizontal plane (gravity eliminated position) |
| 2 | Moves through complete range of motion | Horizontal plane (gravity eliminated position) |
| 3 | Movement trough partial range of motion | Antigravity position |
| 4 | Gradual release from test position | Antigravity position |
| 5 | Holds test position without added pressure | Antigravity position |
| 6 | Hold test position against slight pressure | Antigravity position |
| 7 | Hold test position against slight to moderate pressure | Antigravity position |
| 8 | Hold test position against moderate pressure | Antigravity position |
| 9 | Hold test position against moderate to strong pressure | Antigravity position |
| 10 | Holds test position against strong pressure | Antigravity position |