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  • Title: Management of facial nerve injury due to temporal bone trauma.
    Author: Chang CY, Cass SP.
    Journal: Am J Otol; 1999 Jan; 20(1):96-114. PubMed ID: 9918183.
    Abstract:
    OBJECTIVE: This article provides an overview of relevant data regarding the management of facial nerve injury due to temporal bone trauma. DATA SOURCES: Sources used were relevant English language clinical and basic science publications. STUDY SELECTION: A Medline search dating back to 1966 for articles concerning temporal bone trauma and facial nerve injury including both human and animal data was performed. Articles were included if they contained relevant data or were significant reviews on the subject. A retrograde bibliography search was then conducted to acquire any articles that may have been missed by the computerized search, including those papers published prior to 1966. DATA EXTRACTION: The data from each paper were reviewed individually. DATA SYNTHESIS: The data were not amenable to formal meta-analysis or valid data summarization. CONCLUSIONS: Patients who should not require surgical intervention include those who have: documented normal facial nerve function after injury regardless of progression, presentation with incomplete facial nerve paralysis with no progression to complete paralysis, and degeneration <95% on ENoG. The remaining patients presumably have a poorer prognosis for return of facial nerve function although it remains unclear exactly how poor the return of function will be. Decompression surgery likely has a beneficial effect if performed within 14 days of injury, so those patients with expected poor natural outcomes may be offered this intervention. Late decompression surgery is not recommended. Late exploratory surgery is recommended only in those patients who do not experience adequate recovery of facial nerve function and likely require nerve repair. Despite the availability of a relatively large volume of published data, there remain many unanswered questions.
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