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Table 1 Grading of shoulder function (Narakas [2] modified):

From: Functional outcome of nerve transfer for restoration of shoulder and elbow function in upper brachial plexus injury

Grade Functional status
Poor No abduction movement and feeling of weightlessness in the limb (MRC 0)
Fair Stable shoulder without any subluxation but no active movement (MRC I)
Good Active abduction of < 60 degrees (MRC III) and active external rotation of < 30 degrees
Excellent Active abduction of > 60 degrees (MRC IV) and active external rotation of > 30 degrees.