Table 1.

Modified Medical Research Council system of grading elbow flexion

Grade	Subdivision	Description
0	-	No contraction
1	-	Perceptible contraction in the muscle but no movement
2		Gravity Eliminated
	A	Motion less than or equal to half range
	B	Motion more than half range
	C	Full range of motion
3		Against Gravity
	A	Motion less than or equal to half range
	B	Motion more than half range
	C	Full range of motion
4		Motion Against Resistance
	A	Able to lift less than 30% weight of the normal side through full range
	B	Able to lift 30–60% weight of the normal side through full range
	C	Able to lift more than 60% weight of the normal side through full range
5		Normal strength