MRC Muscle Power Grade
The Medical Research Council (MRC) muscle-power grade, the standard 0-5 bedside grading of the strength of a single muscle or movement.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- MRC muscle-power grade
- 3 - active movement against gravity
Result: MRC grade 3: active movement against gravity.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Grade 0
- No contraction.
- Grade 1
- A flicker or trace of contraction.
- Grade 2
- Active movement with gravity eliminated.
- Grade 3
- Active movement against gravity.
- Grade 4
- Active movement against gravity and resistance.
- Grade 5
- Normal power.
What you enter
- MRC muscle-power grade
How this is calculated
Medical Research Council. Aids to the Examination of the Peripheral Nervous System. Memorandum No. 45. London: HMSO; 1976. Reproduced in Compston A. Brain. 2010;133(10):2838-2844. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.