title: [The technique of hearing reconstruction in the cases of conductive hearing loss with malformed tympanic segment of facial nerve].
abstract: OBJECTIVE
  To explore the technique of hearing reconstruction in the cases of conductive hearing loss with malformed tympanic segment of facial nerve.
  
  
  METHODS
  Data of 10 cases from July 2010 to March 2015 were collected.The status of tympanic segment of facial nerve, malformed ossicles and the reconstructed methods of ossicular chain were analyzed and discussed based on the embryo anatomy and surgical technique.
  
  
  RESULTS
  All facial nerves in 10 cases were exposed and drooping to stapes or cover the oval window.Three patients who had normal stapes, pushed by the exposed facial nerve, were reconstructed with partial ossicular replacement prostheses (PORP). Two patients who had footplate, with partial fixation, were reconstructed with total ossicular replacement prostheses (TORP). Three patients who had atresia of the oval window were implanted with Piston after being made hole in the atresia plate.Another two cases who had atresia of the oval window were implanted with TORP after promontory being drilled out.All cases had no injury of facial nerve and nervous hearing, and no tinnitus.Nine cases had conductive hearing improvement, except one with promontory drilled out.
  
  
  CONCLUSIONS
  Patients who had conductive hearing loss with malformed tympanic segment of facial nerve can be treated by the technique of hearing reconstruction.The fenestration technique in the bottom of the scala tympani of the basal turn provides us a new method for treating patients whose oval window was fully covered by malformed facial nerve.
authors.affiliation: Department of Otolaryngology, the Second Central Hospital of Baoding, Zhuozhou 072750, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Yang
authors.forename: Rendong
authors.initials: R
authors.lastname: Song
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
mesh_terms: D004432:Ear, Middle; D005154:Facial Nerve; D006314:Hearing Loss, Conductive; D006801:Humans; D013199:Stapes