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Table 3 Modified MRC scale for evaluation of wrist function

From: The effect of perinatal brachial plexus lesion on upper limb development

Grade 0

No contraction or flicker of contraction

Grade 1

Active movement with gravity eliminated

Grade 2

Active movement against gravity only

Grade 3

Active movement against resistance with motion reaching ≤ 1/2 normal range

Grade 4

Active movement against resistance with motion reaching > 1/2 normal range

Grade 5

Normal power and range of motion

  1. Evaluation: grade 3 and 4 are functionally useful both in flexion and extension (F/E).