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Related Experiment Video

Updated: Apr 19, 2026

The Microscopic Transcanal Approach in Stapes Surgery Revisited
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Five-year hearing results with the shape memory nitinol stapes prosthesis.

Jeremy Lavy1, Sherif Khalil

  • 1ENT Department, Royal National Throat, Nose and Ear Hospital, London, United Kingdom. jeremy.lavy@nhs.net

The Laryngoscope
|December 17, 2014
PubMed
Summary

The shape-memory nitinol stapes piston demonstrated stable long-term hearing improvements for otosclerosis patients over five years. This surgical technique offers a reliable solution for hearing restoration in otosclerosis.

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Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Neurosurgery

Background:

  • Otosclerosis is a condition causing conductive hearing loss due to abnormal bone growth in the middle ear.
  • Stapedotomy with prosthesis insertion is a common surgical treatment for otosclerosis.
  • Long-term outcomes of specific stapes piston materials require continued evaluation.

Purpose of the Study:

  • To assess the 5-year efficacy of the shape-memory nitinol stapes piston in otosclerosis surgery.
  • To evaluate the durability of hearing results achieved with this nitinol prosthesis.

Main Methods:

  • Retrospective case review of adult patients with otosclerosis.
  • Stapedotomy and stapes piston reconstruction using a shape-memory nitinol device.
  • Masked air and bone conduction audiometry for outcome measurement at 1 and 5 years.

Main Results:

  • Forty-eight ears had complete 5-year audiometric data.
  • Mean preoperative air-bone gap was 29.2 dB.
  • Postoperative air-bone gap improved to 4.6 dB at 1 year and 7.0 dB at 5 years.

Conclusions:

  • The shape-memory nitinol stapes piston provides stable, long-term hearing outcomes in otosclerosis surgery.
  • This nitinol prosthesis is a reliable option for ossicular chain reconstruction in otosclerosis treatment.