Strength testing
Muscle strength is tested from the proximal to the distal part of the extremity so that all segmental levels for the extremity are tested (for the upper extremity that is C5 to T1 -- see table). Muscle power is graded on a scale of 0-5 (see table)
Strength Testing
C5 -- Shoulder extension
C6 -- Arm flexion
C7 -- Arm extension
C8 -- Wrist extensors
T1 -- Hand grasp
Muscle Strength Grading
0 -- No contraction
1 -- Slight contraction, no movement
2 -- Full range of motion without gravity
3 -- Full range of motion with gravity
4 -- Full range of motion , some resistance
5 -- Full range of motion, full resistance
