Modified Selective Neurectomy for Post Facial Paralysis Synkinesis Smile Dysfunction.

Following incomplete facial nerve injury, patients may develop aberrant facial nerve reinnervation, which can result in facial synkinesis. The treatment goals for patients with postfacial paralysis synkinesis are to improve resting oral commissure position, oral competence, facial and cervical tightness, and smile symmetry and spontaneity. Modified selective neurectomy of the facial nerve as described by Azizzadeh and colleagues is a targeted surgical method that allows the surgeon to eliminate the antagonist movements of the face and allow the favorable movements of the face to predominate, resulting in a more natural smile.