Abstract
 Introduction
Otosclerosis is an osteodystrophy of the labyrinthine capsule producing conductive hearing loss. If the process invades the cochlea, a sensorineural hearing loss usually takes place. The cochlear implant is a good alternative in these patients. Objective
To ascertain the behaviour of cochlear implantation in otosclerosis.
Evolution of otosclerosis to cochlear implantation
 
  Keywords
 
 
  
   Otosclerosis
  
 
 
  
   Cochlear implant
  
 
 
  
   Computerized tomography
  
 
 
  
   Facial nerve
  
 
Abstract
 Introduction
Otosclerosis is an osteodystrophy of the labyrinthine capsule producing <dis>conductive hearing loss</dis>.
If the process invades the cochlea, a <dis>sensorineural hearing loss</dis> usually takes place.
The cochlear implant is a good alternative in these patients.
Objective
To ascertain the behaviour of cochlear implantation in otosclerosis.
Material and methods
We reviewed a database of 250 patients that underwent cochlear implantation, performing a retrospective study of 13 patients with clinical, audiological and/or imaging findings of bilateral otosclerosis.
The 26 ears were studied as to their natural history, previous surgeries, evolution to <dis>profound hearing loss</dis>, computed tomography images, complications and functional results.
Results
Of the cases studied, 46% were female and 54% were men, with a mean age of 26 years at the onset of <dis>conductive hearing loss</dis>.
Stapes surgery was performed in 19 ears (73%), with a mean patient age of 29 years, and 53% of them underwent cochlear implantation.
Computed tomography results showed that there were signs of different degrees of radiological affectation in 54% of the ears.
A total of 3 complications took place (23%): implant failure, overstimulation of the facial nerve and bilateral tinnitus were found.
One year after implantation, the average percentages of correct 2-syllable words were 80% and 85% in open sentences.
Conclusions
Patients having <dis>profound bilateral sensorineural hearing loss</dis> secondary to otosclerosis obtain great benefit from cochlear implantation.
Abstract
 Introduction
Otosclerosis is an osteodystrophy of the labyrinthine capsule producing conductive hearing loss.
If the process invades the cochlea, a sensorineural hearing loss usually takes place.
The cochlear implant is a good alternative in these patients.
Objective
To ascertain the behaviour of cochlear implantation in otosclerosis.
Material and methods
We reviewed a database of 250 patients that underwent cochlear implantation, performing a retrospective study of 13 patients with clinical, audiological and/or imaging findings of bilateral otosclerosis.
The 26 ears were studied as to their natural history, previous surgeries, evolution to profound hearing loss, computed tomography images, complications and functional results.
Results
Of the cases studied, 46% were female and 54% were men, with a mean age of 26 years at the onset of conductive hearing loss.
Stapes surgery was performed in 19 ears (73%), with a mean patient age of 29 years, and 53% of them underwent cochlear implantation.
Computed tomography results showed that there were signs of different degrees of radiological affectation in 54% of the ears.
A total of 3 complications took place (23%): implant failure, overstimulation of the facial nerve and bilateral tinnitus were found.
One year after implantation, the average percentages of correct 2-syllable words were 80% and 85% in open sentences.
Conclusions
Patients having profound bilateral sensorineural hearing loss secondary to otosclerosis obtain great benefit from cochlear implantation.
Abstract
 Introduction
Otosclerosis is an osteodystrophy of the labyrinthine capsule producing <dis>conductive hearing loss</dis>. If the process invades the cochlea, a <dis>sensorineural hearing loss</dis> usually takes place. The cochlear implant is a good alternative in these patients. Objective
To ascertain the behaviour of cochlear implantation in otosclerosis.
conductive hearing loss
DISABILITY
sensorineural hearing loss
DISABILITY