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Lateral semicircular canal fenestration for congenital conductive hearing loss: Solution for a dilemma
Mohammadtaghi Khorsandi Ashtiani1, Nasrin Yazdani, Sasan Dabiri Satri
1Otorhinolaryngology Research Center, Amir-Alam Hospital, Department of Otolaryngology-Head and Neck Surgery, Tehran University of Medical Sciences, Tehran, Iran.
Objective:
To determine functional results after lateral semicircular canal fenestration on congenital conductive hearing loss.
Study Design:
Case series with chart review.
Setting:
Amir-Alam otolaryngology tertiary referral center.
Subjects And Methods:
Twenty patients with congenital oval window malformations who were not candidates for ossicular reconstruction underwent lateral semicircular canal fenestration. A skin graft was placed over the perforated fascial graft on the fenestrated area.
Results:
The median preoperative mean air conduction (MAC) was 56.9 dB (50.0 dB median air-bone). Postoperative median MAC gain of 34.3 dB (P < 0.001) and the median air-bone gap of 18.8 dB were observed. The mean bone conduction (MBC) did not show any significant changes postoperatively (P = 0.12). No sensorineural hearing loss, tinnitus, or imbalance was observed.
Conclusion:
We demonstrated hearing improvement after lateral semicircular canal fenestration. This technique can be considered as an alternative for patients with middle ear anomalies who are not candidates for ossicular reconstruction.
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