Surgical treatment of otosclerosis using a unique stapes prosthesis without a hook

Sho Kanzaki, J. Kanzaki, Kaoru Ogawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Background: During stapes surgery, the Teflon wire piston prosthesis is prone to postoperative ‘slips’ and subsequent necrosis and fracture of the long process of the incus. Aims/Objective: We invented and used a novel cup-shaped apatite prosthesis to reduce the incidence of necrosis of the long process of the incus and analysed the postoperative results. Material and methods: Thirty-one ears in 25 patients with otosclerosis who underwent stapes surgery with our apatite prosthesis were evaluated. Results: The air conduction improved by 24.0 dB (the average) from pre- to post-operation. Additionally, 84.8% of patients achieved an air–bone gap of ≤10 dB for the 4-frequency measurements (p <.01). Conclusions: Our findings indicate that our new prosthesis was associated with a good postoperative prognosis in patients with otosclerosis. Significance: Our unique prosthesis yielded good outcomes for the treatment of otosclerosis even in the short term.

Original languageEnglish
Pages (from-to)10-13
Number of pages4
JournalActa Oto-Laryngologica
Issue number1
Publication statusPublished - 2021


  • Stapes prosthesis
  • otosclerosis
  • stapedectomy

ASJC Scopus subject areas

  • Otorhinolaryngology


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