title: Subtotal Petrosectomy for Cochlear Implantation: Lessons Learned After 110 Cases.
abstract: OBJECTIVE
  The purpose of this study was to review the indications for subtotal petrosectomy for cochlear implantation, report our management of complications, as well as review those technical factors that are critical for successful implantation.
  
  
  METHODS
  Patients (n = 104) that underwent subtotal petrosectomy with closure of the external auditory canal and obliteration of the cavity with abdominal fat in combination with cochlear implantation were analyzed.
  
  
  RESULTS
  The most frequent indication for subtotal petrosectomy was the existence of a previous canal wall down technique. Postoperative complications occurred in 13 patients (11.83%). Extrusion of the device took place in 5 cases (4.55%).
  
  
  CONCLUSIONS
  Subtotal petrosectomy in cochlear implantation permits obtaining a cavity isolated from the external environment, and when needed, it improves the access and visibility during the surgical procedure. Subtotal petrosectomy is a safe technique, with a low rate of complications.
authors.affiliation: Otolaryngology Department, Hospital Ramón y Cajal, Madrid, Spain rubenpolo1979@gmail.com.
authors.forename: Rubén
authors.initials: R
authors.lastname: Polo
authors.affiliation: Otolaryngology Department, Hospital Ramón y Cajal, Madrid, Spain.
authors.forename: María
authors.initials: M
authors.lastname: Del Mar Medina
authors.affiliation: Otolaryngology Department, Hospital Gregorio Marañón, Madrid, Spain.
authors.forename: Miguel
authors.initials: M
authors.lastname: Arístegui
authors.affiliation: Otolaryngology Department, Hospital La Paz, Madrid, Spain.
authors.forename: Luis
authors.initials: L
authors.lastname: Lassaletta
authors.affiliation: Otolaryngology Department, Hospital Ramón y Cajal, Madrid, Spain.
authors.forename: Auxiliadora
authors.initials: A
authors.lastname: Gutierrez
authors.affiliation: Otolaryngology Department, Hospital Gregorio Marañón, Madrid, Spain.
authors.forename: Gracia
authors.initials: G
authors.lastname: Aránguez
authors.affiliation: Otolaryngology Department, Gruppo Otologico, Piacenza, Italy.
authors.forename: Sampath Chandra
authors.initials: SC
authors.lastname: Prasad
authors.affiliation: Otolaryngology Department, Hospital Ramón y Cajal, Madrid, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Alonso
authors.affiliation: Otolaryngology Department, Hospital La Paz, Madrid, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Gavilán
authors.affiliation: Otolaryngology Department, Gruppo Otologico, Piacenza, Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Sanna
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation / Q000379:methods*; D004424:Ear Canal / Q000601:surgery*; D004432:Ear, Middle / Q000601:surgery*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010579:Petrous Bone / Q000601:surgery*; D011183:Postoperative Complications / Q000453:epidemiology; D011475:Prosthesis Failure; D012189:Retrospective Studies; D013701:Temporal Bone / Q000601:surgery; D055815:Young Adult
keywords: chronic ear disease; cochlear implantation; cochlear implants; middle ear obliteration; subtotal petrosectomy