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 |