The influence of the footplate-perilymph interface on postoperative bone conduction

Adv Otorhinolaryngol. 2007;65:155-157. doi: 10.1159/000098794.

Abstract

In a prospective study, 165 total stapedectomies and 152 small fenestra stapedotomies were performed by three experienced surgeons between 2001 and 2003. In total stapedectomy, a self-made Schuknecht steel wire connective tissue prosthesis, and in stapedotomy, a 0.6-mm platinum wire Teflon piston was used. The pre- and postoperative bone conduction thresholds were compared at the frequencies 250 Hz, 500 Hz, 1 kHz, 1.5 kHz, 2 kHz, 3 kHz and 4 kHz. The postoperative bone conduction between 250 Hz and 3 kHz was significantly better in the total stapedectomy group than in the stapedotomy group. At 4 kHz, both groups showed a slight decrease in bone conduction but the difference was not statistically significant. Therefore, especially in cases with preoperative moderate sensorineural hearing loss, we recommend total stapedectomy using a Schuknecht steel wire connective tissue prosthesis, which offers a stapes-perilymph interface similar to the normal stapes.

Publication types

  • Comparative Study

MeSH terms

  • Audiometry, Pure-Tone
  • Auditory Threshold / physiology
  • Bone Conduction / physiology*
  • Fenestration, Labyrinth*
  • Hearing Loss, Conductive / physiopathology
  • Hearing Loss, Conductive / surgery
  • Hearing Loss, Sensorineural / physiopathology
  • Hearing Loss, Sensorineural / surgery
  • Humans
  • Ossicular Prosthesis*
  • Otosclerosis / physiopathology
  • Otosclerosis / surgery*
  • Perilymph / physiology*
  • Postoperative Complications / diagnosis
  • Postoperative Complications / physiopathology*
  • Prospective Studies
  • Prosthesis Design
  • Stapes Surgery*