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Updated: Feb 2, 2026
08:06
Robotic Cochlear Implantation for Direct Cochlear Access
Published on: June 16, 2022
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Facial Nerve Stimulation Patterns Associated With Cochlear Implantation in Labyrinthitis Ossificans
Ashley M Nassiri1, Robert J Yawn, Matthew M Dedmon
1Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University, Nashville, Tennessee.
Summary
Facial nerve stimulation (FNS) can occur after cochlear implantation (CI) in patients with labyrinthitis ossificans. While CI reprogramming can resolve FNS, audiologic outcomes vary, potentially leading to device explantation.
Area of Science:
- Otolaryngology
- Neurosurgery
- Biomedical Engineering
Background:
- Labyrinthitis ossificans presents unique challenges for cochlear implantation (CI).
- Facial nerve stimulation (FNS) is a potential complication following CI.
Purpose of the Study:
- To characterize FNS patterns in patients with labyrinthitis ossificans who received CI.
- To evaluate the incidence and management of FNS in this patient cohort.
Main Methods:
- Retrospective review of patients with labyrinthitis ossificans undergoing CI.
- Analysis of FNS occurrence, electrode involvement, and management strategies.
- Postoperative imaging and audiologic outcome assessment.
Main Results:
- Five of 14 ears (35.7%) developed postoperative FNS.
- FNS involved basal, middle, and/or apical electrodes.
- CI reprogramming resolved FNS in all cases, but two patients became non-users due to poor audiologic benefit.
Conclusions:
- FNS is a possible complication in CI patients with labyrinthitis ossificans, originating from various cochlear regions.
- While FNS can be managed through CI reprogramming, the resulting hearing benefit is unpredictable and may necessitate explantation.
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