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MRC SCALE FOR ASSESSMENT OF MUSCLE POWER

This is a reliable and validated scale for assessing muscle weakness, described initially in: Medical Research Council. Aids to the investigation of peripheral nerve injuries. London: HMSO, 1975.

Each muscle group is graded as follows:


0 - no movement
1 - flicker is perceptible in the muscle
2 - movement only if gravity eliminated
3 - can move limb against gravity
4 - can move against gravity & some resistance exerted by examiner
5 - normal power

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Copyright ©Nikki Devitt 2002, on behalf of the WAHT Stroke Pathway Group

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Date of last review: 25th April 2002

Date of next review:25th October 2002