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Updated: Jul 7, 2026
Extracting the Cochlea from a Human Temporal Bone: A Cadaveric Protocol
Published on: August 18, 2023
Evaluation of the short hybrid electrode in human temporal bones
J Thomas Roland1, Daniel M Zeitler, Daniel Jethanamest
1Department of Otolaryngology-Head and Neck Surgery, New York University School of Medicine, New York, New York, USA. tom.roland@med.nyu.edu
Hypothesis:
The current hybrid electrode can be inserted without trauma to the temporal bone and, after insertion, assumes a position within the scala tympani near the outer cochlear wall just beneath the basilar membrane.
Background:
Conservation of residual hearing after cochlear implant electrode insertion requires a special insertion technique and an atraumatic short electrode. This allows electroacoustic stimulation in ears with significant residual hearing.
Methods:
Human cadaveric temporal bones were implanted with soft surgical technique under fluoroscopic observation. Dehydrated and resin-impregnated bones are dissected. Real-time electrode insertion behavior and electrode position were evaluated. The bones are examined for evidence of insertion-related trauma.
Results:
No gross trauma was observed in the implanted bones, and the electrode dynamics evaluation revealed smooth scala tympani insertions.
Conclusion:
Atraumatic insertion of the 10-mm hybrid electrode can be accomplished using an appropriate cochleostomy and insertion technique.
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