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Table 4 Al-Qattan’s scale for evaluation of hand motor function

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

Grade 0 Useless hand Complete paralysis or slight finger motion of no use, useless thumb
Grade 1 Poor function Only very weak grip possible
Grade 2 Fair function There is some active flexion and/or extension of the fingers and some thumb mobility but the hand posture is intrinsic minus
Grade 3 Good function Some as 2 but there is no intrinsic minus posture (intrinsic balance)
Grade 4 Excellent function Near normal active finger flexion/extension and thumb mobility, with some active intrinsic function
Grade 5 Normal function  
  1. Evaluation: grade 3 and 4 are functionally useful.