Manual Muscle Strength Testing of The Hand Muscles
In clinical practice, hand muscles are most often evaluated using manual muscle strength testing using the Medical Research Council (MRC) Scale. In this scale, muscle strength is graded on a scale from 0 to 5. For evaluating the strength of the intrinsic hand muscles, a small modification to the standard MRC grading has been made so that grade 3 indicates ‘full active range of motion’ as compared to ‘movement against gravity’:
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