Manual Muscle Strength Grading Chart
Grade
Percentage
Description
5 (Normal)
100
Complete range of motion against gravity with full resistance
4 (Good)
75
Complete range of motion against gravity with some resistance
3 (Fair)
50
Complete range of motion against gravity with no resistance
2 (Poor)
25
Complete range of motion with gravity eliminated
1 (Trace)
10
Evidence of slight contractility with no evidence of joint motion even with gravity eliminated
0 (Zero)
0
No evidence of muscle contractility