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Facial nerve function after petrosectomy.

R Häusler1, M Caversaccio, P Zbären

  • 1Department of Otorhinolaryngology, Head and Neck, University of Berne, Inselspital, Switzerland.

The Laryngoscope
|July 13, 1999
PubMed
Summary
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Petrosectomy with facial nerve decompression or rerouting typically restores normal facial function. Early nerve repair via suture or grafting after trauma or tumor infiltration offers acceptable facial reinnervation.

Area of Science:

  • Neurosurgery
  • Otolaryngology
  • Facial Nerve Surgery

Background:

  • Petrosectomy is a complex surgical procedure involving the petrous bone, often necessitating facial nerve management.
  • Facial nerve function can be compromised during petrosectomy due to tumor infiltration, trauma, or the surgical approach itself.

Purpose of the Study:

  • To evaluate facial nerve function outcomes after various petrosectomy techniques.
  • To assess the efficacy of different facial nerve reconstruction methods following petrosectomy.

Main Methods:

  • Retrospective analysis of 56 patients undergoing petrosectomy for tumors, trauma, or osteoradionecrosis.
  • Facial nerve management included denudation-decompression, rerouting, primary suture, and nerve grafting.
  • Facial nerve function was graded using the House-Brackmann system.

Related Experiment Videos

Main Results:

  • Denudation-decompression with or without rerouting yielded normal to near-normal facial function (House-Brackmann Grade I-II), except in cases of malignant tumors and osteoradionecrosis.
  • Nerve suturing and grafting after trauma resulted in satisfactory function (Grade III-IV), with one late repair yielding Grade V.
  • Nerve grafting for tumor infiltration showed variable results, with better outcomes in healed tumors or post-radiotherapy cases (Grade III-IV) compared to tumor recurrence (Grade V-VI).

Conclusions:

  • Petrosectomy combined with facial nerve denudation-decompression and/or rerouting generally preserves or restores facial nerve function.
  • Early reconstruction of traumatically disrupted or tumor-infiltrated facial nerves using suture or grafting provides acceptable functional recovery.