MRC grading system of muscle power

 - Muscle power grading is a system used to assess the strength of a patient's muscles. 

 - The grading follows the Medical Research Council (MRC) scale, which ranges from 0 to 5-

 

Grade

Description 

0 

No contraction

No muscle contraction is visible or palpable.

1 

Only contaction

No movement 

Muscle contraction is visible or palpable, 

but no movement occurs.

2

No gravity

Muscle movement occurs, 

but only when gravity is eliminated.

3

Against gravity

Muscle movement against gravity,

but not against resistance. 

4

Against resistance

Muscle movement against gravity and
some resistance, but the muscle is weak. 

5

Normal

Normal strength; full movement

against gravity and full resistance. 
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