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Table 2 McGowan’s classification for preoperative assessment

From: Ulnar nerve anteposition with adipofascial flap, an alternative treatment for severe cubital syndrome

McGowan's classification (PRE-OPERATIVE)

0

No Symptoms

I

Minimal lesions, with no detectable motor weakness of the hand

II

Intermediate lesions

III

Severe lesions, with paralysis of one or more of the ulnar intrinsic muscles