0
No palpable contraction
1
Visible or palpable contraction
2-
Partial ROM, gravity reduced
2
Full ROM, gravity reduced
2+
Gravity reduced, slight resistance, or < 1/2 range against gravity
3-
> 1/2, but less than full ROM against gravity
3
Full ROM against gravity
3+
Full ROM, slight resistance
4-
Full ROM , mild resistance
4
Full ROM, moderate resistance
4+
Full ROM, almost full resistance
5
Normal, maximal resistance