Grades of Muscle Strength [a]

Grades of Muscle Strength [a]

Grade

Description

5

Full strength against resistance

4

Active movement against moderate resistance

3

Active movement against gravity but not resistance

2

Active movement with gravity eliminated

1

Evidence of contraction (visible or palpable) with no or trace joint movement

0

No palpable or visible contraction and no joint movement

[a] Data are adapted from the MRC Muscle Scale found in Aids to the Examination of the Peripheral Nervous System (Memorandum No. 45) and used with the permission of the Medical Research Council under Open Government Licence 3.0.

[a] Data are adapted from the MRC Muscle Scale found in Aids to the Examination of the Peripheral Nervous System (Memorandum No. 45) and used with the permission of the Medical Research Council under Open Government Licence 3.0.