title: Lateral semicircular canal fenestration for congenital conductive hearing loss: Solution for a dilemma.
abstract: OBJECTIVE
  To determine functional results after lateral semicircular canal fenestration on congenital conductive hearing loss.
  
  
  METHODS
  Case series with chart review.
  
  
  METHODS
  Amir-Alam otolaryngology tertiary referral center.
  
  
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Otorhinolaryngology Research Center, Amir-Alam Hospital, Department of Otolaryngology-Head and Neck Surgery, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammadtaghi Khorsandi
authors.initials: MK
authors.lastname: Ashtiani
authors.forename: Nasrin
authors.initials: N
authors.lastname: Yazdani
authors.forename: Sasan Dabiri
authors.initials: SD
authors.lastname: Satri
authors.forename: Zahra
authors.initials: Z
authors.lastname: Mokhtari
authors.forename: Ali
authors.initials: A
authors.lastname: Kouhi
mesh_terms: D000293:Adolescent; D000328:Adult; D001309:Auditory Threshold; D001844:Bone Conduction; D002648:Child; D002675:Child, Preschool; D005260:Female; D006314:Hearing Loss, Conductive / Q000151:congenital / Q000601:surgery*; D006801:Humans; D008297:Male; D013506:Otologic Surgical Procedures / Q000379:methods; D012665:Semicircular Canals / Q000601:surgery*; D055815:Young Adult