MRC muscle power scale
Neurology
Also known as: Medical Research Council muscle scale · MRC-Skala Muskelkraft · Kraftgrade nach MRC · MRC kas gücü skalası · MRC scale for muscle power (0-5)
What it is for
MRC scale: manual muscle testing grade for one muscle group, from 0 (no contraction) to 5 (normal power), relative to what is expected for that muscle.
Classification
| Category | Description |
|---|---|
| 0 | no contraction. |
| 1 | flicker or trace of contraction, no movement. |
| 2 | active movement with gravity eliminated. |
| 3 | active movement against gravity. |
| 4 | active movement against gravity and some resistance (often subdivided 4-, 4, 4+ for slight, moderate, strong resistance). |
| 5 | normal power. |
Source
Aids to the Examination of the Peripheral Nervous System (Memorandum No. 45)
Medical Research Council (MRC) · Medical Research Council (first published 1943 as Aids to the Investigation of Peripheral Nerve Injuries, War Memorandum No. 7)
- Edition
- MRC scale as in Aids to the Examination of the Peripheral Nervous System (MRC Memorandum No. 45; scale first published 1943)
- Checked on
Summary of the published classification in our own words. Not a substitute for the original publication.
A question about this classification?
Medelix answers clinical questions from guidelines and studies – every statement with its source.