Bone dehiscence of the facial canal during transmastoid decompression surgery is a poor prognostic factor in severe Bell's palsy

IF 1.6 4区医学 Q2 OTORHINOLARYNGOLOGY

Auris Nasus Larynx Pub Date : 2025-02-01 DOI:10.1016/j.anl.2025.01.009

Toshiya Minakata , Shinichi Esaki , Kayoko Kabaya , Sachiyo Katsumi , Akira Inagaki , Shingo Murakami , Shinichi Iwasaki

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Abstract

Objectives

To investigate the incidence of facial canal dehiscence and its association with the recovery rate of facial palsy in patients with severe Bell's palsy who underwent transmastoid facial nerve decompression surgery.

Methods

This retrospective study included 142 patients with severe Bell's palsy who underwent transmastoid decompression surgery. The presence of a facial canal dehiscence, the site of the dehiscence, the protrusion of the nerve from the dehiscence, and the recovery rate of facial palsy were investigated.

Results

A bone dehiscence of the facial canal was observed in 50 patients (35.2 %) during surgery, with most (92.5 %) being located in the tympanic segment. Protrusion of the facial nerve from the dehiscence was observed in 25 patients (17.6 %). The recovery rate of facial palsy was significantly better in patients without dehiscence of the facial canal (57.6 %) compared to those with bone dehiscence but lacking protrusion of the nerve (32.0 %; p = 0.044) or those having a bone dehiscence with protrusion of the nerve (28.0 %; p = 0.011).

Conclusion

Patients exhibiting dehiscence of the facial canal during transmastoid decompression surgery for severe Bell's palsy demonstrate a diminished recovery rate in comparison to those without dehiscence of the canal.

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来源期刊

Auris Nasus Larynx 医学-耳鼻喉科学

CiteScore

3.40

自引率

5.90%

发文量

169

审稿时长

30 days

期刊介绍： The international journal Auris Nasus Larynx provides the opportunity for rapid, carefully reviewed publications concerning the fundamental and clinical aspects of otorhinolaryngology and related fields. This includes otology, neurotology, bronchoesophagology, laryngology, rhinology, allergology, head and neck medicine and oncologic surgery, maxillofacial and plastic surgery, audiology, speech science. Original papers, short communications and original case reports can be submitted. Reviews on recent developments are invited regularly and Letters to the Editor commenting on papers or any aspect of Auris Nasus Larynx are welcomed. Founded in 1973 and previously published by the Society for Promotion of International Otorhinolaryngology, the journal is now the official English-language journal of the Oto-Rhino-Laryngological Society of Japan, Inc. The aim of its new international Editorial Board is to make Auris Nasus Larynx an international forum for high quality research and clinical sciences.