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Related Concept Videos

The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

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Robotic Cochlear Implantation for Direct Cochlear Access
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Published on: June 16, 2022

Cochlear implantation in ossified cochlea-Merf experience.

M Kameswaran1, R S A Kumar, S Murali

  • 1Madras ENT Research Foundation, 15 Sivasamy Salai, Mylapore, 600-004 Chennai, Tamil Nadu India.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India
|November 3, 2012
PubMed
Summary

Labyrinthitis ossificans, a complication of meningitis, involves cochlear ossification. Cochlear implantation in affected patients showed similar auditory benefits with partial electrode insertion as with complete insertion.

Keywords:
Double ArrayLabyrinthitis Ossificans

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Medical Imaging

Background:

  • Labyrinthitis ossificans is a pathological condition resulting from meningitis.
  • It leads to the ossification of the cochlea, which can be partial or complete.
  • This condition presents challenges for auditory rehabilitation.

Purpose of the Study:

  • To evaluate the efficacy of cochlear implantation in patients with labyrinthitis ossificans.
  • To compare auditory outcomes between partial and complete electrode array insertions in these patients.

Main Methods:

  • A retrospective analysis of four patients with labyrinthitis ossificans who underwent cochlear implantation.
  • Two patients received double array insertion, and two received partial insertion of straight array electrodes.
  • Auditory benefit was assessed and compared between the groups.

Main Results:

  • Despite partial insertion of electrodes in two patients, no significant difference in auditory benefit was observed compared to those with complete insertion.
  • Both partial and complete insertions yielded comparable outcomes in this cohort.
  • The surgical approach was adapted based on the degree of ossification.

Conclusions:

  • Cochlear implantation can be effective in patients with labyrinthitis ossificans, even with challenges posed by ossification.
  • Partial electrode insertion may provide similar auditory benefits to complete insertion in select cases.
  • Surgical technique should be individualized to optimize outcomes in the presence of cochlear ossification.