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

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.