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Neurology 2003;61:693-695
© 2003 American Academy of Neurology
Brief Communications

Hypoglossal-facial nerve anastomosis

Dynamic insight into the cross-innervation phenomenon

F. Tankéré, MD, I. Bernat, MD, E. Vitte, MD PhD, G. Lamas, MD, P. Bouche, MD, E. Fournier, MD PhD, J. Soudant, MD and J. C. Willer, MD DSc

From the ENT Department (Drs. Tankéré, Bernat, Vitte, Lamas, and Soudant) and the Department of Clinical Neurophysiology (Drs. Bouche, Fournier, and Willer), Pitié-Salpêtrière Hospital; and INSERM E0349 (Drs. Tankéré, Fournier, and Willer), Paris, France.

Address correspondence and reprint requests to Dr. Jean-Claude Willer, Fédération de Neurophysiologie Clinique, Hôpital de la Pitié-Salpêtrière, 47 Boulevard de l’Hôpital, 75013 Paris, France; e-mail: willer{at}ccr.jussieu.fr

The authors investigated the evolution of the dynamic features of the cross-innervation process in patients with complete facial palsy due to facial nerve transection during surgery for acoustic neuroma removal followed by a hypoglossal-facial nerve anastomosis (HFA). Clinical and electrophysiologic investigations were carried out before and over a 3-year period after HFA. Cross-innervation had started by the 10th day, progressed to the seventh to eighth month, then decreased and finally disappeared by the 12th month after HFA. Ipsilateral reinnervation was observed by the fourth month, progressed to the 12th to 18th month, and remained stable for the remainder of the follow-up period.






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