Authors of section

Authors

Damir Matic, John Yoo

General Editors

Daniel Buchbinder

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Reinnervation with masseteric nerve transposition

1. Introduction

There are several options to power the facial nerve. The commonest options include:

  • Cross face (contralateral VII)
  • Masseteric nerve
  • Hypoglossal (XII)

Selective reinnervation can be considered in which a local nerve is used for eye closure and the masseteric nerve is used to power smile.

General considerations regarding nerve repair techniques can be found here.

2. Facial nerve identification and exposure

Approach and branches identification

A facelift or parotidectomy type incision is performed. If present, existing lacerations may also be used.

reinnervation with masseteric nerve transposition

3. Masseteric nerve reinnervation

Masseteric nerve identification

The masseteric nerve is identified within the body of the masseter muscle at the level of the sigmoid notch.

A nerve stimulator is used to confirm activity prior to nerve division and preparation for coaptation.

reinnervation with masseteric nerve transposition

Masseteric nerve coaptation

A direct coaptation of the masseteric nerve to the facial nerve at this level is often possible without a graft.

reversible paralysis

Static suspension may be used to augment reinnervation procedures, in order to improve facial symmetry at rest, especially during the period of facial nerve recovery.

Closure

The skin incision is closed in layers.

4. Aftercare

Routine wound care is all that is necessary for the majority of the procedures.