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  • Title: 'Soft reinforcement' of the round window for superior semi-circular canal dehiscence syndrome.
    Author: Gona A, Phillips JS.
    Journal: J Laryngol Otol; 2020 Apr; 134(4):366-368. PubMed ID: 32106896.
    Abstract:
    BACKGROUND: Individuals with superior semi-circular canal syndrome often describe vestibular symptoms elicited by loud sounds, as well as other pressure-induced symptoms. They also often report other symptoms, including autophony, hyperacusis, cognitive dysfunction, spatial disorientation, anxiety and migraine headaches. Symptoms occur due to the presence of a 'third window' created by the dehiscence of the superior semi-circular canal. This case report describes a minimally invasive technique to provide soft reinforcement of the round window. CASE REPORT: Our patient underwent a permeatal procedure whereby the tympanic membrane was raised to allow inspection of the middle ear. The round window niche was identified and the round window membrane was reinforced with fat. The mucosa of the bony meatus leading to the round window was then disrupted before the application of a double layer of perichondrium to allow further reinforcement. CONCLUSION: The case provides support for the use of 'soft reinforcement' as a simple and effective technique to treat the symptoms of superior canal dehiscence syndrome.
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