The use of local anesthetic motor block to demonstrate the potential outcome of depressor labii inferioris resection in patients with facial paralysis

If a patient with unilateral facial paralysis has marked depressor activity on the normal side, the appearance of the lower lip when smiling is asymmetrical. Defunctioning the muscle on the contralateral side to the palsy can restore balance. This can be achieved by resecting a portion of the depres...

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