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Prosthesis size in stapedectomy

M J Fucci1, W H Lippy, A G Schuring

  • 1Warren Otologic Group, Ohio 44484, USA.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|February 5, 1998
PubMed
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This study compared Robinson prostheses of 0.4 mm and 0.6 mm widths in stapedectomy surgery for otosclerosis. Results showed no significant difference in hearing outcomes between the two prosthesis widths.

Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Medical Devices

Background:

  • Otosclerosis is a common cause of conductive hearing loss.
  • Stapedectomy is a surgical procedure to restore hearing in otosclerosis patients.
  • The choice of prosthesis diameter may influence surgical outcomes.

Purpose of the Study:

  • To compare the efficacy of 0.4 mm and 0.6 mm wide Robinson prostheses in partial stapedectomy.
  • To evaluate the impact of prosthesis width on air-bone gap closure in otosclerosis patients.

Main Methods:

  • A prospective study involving 60 patients with bilateral otosclerosis.
  • Each patient received a 4 mm long Robinson prosthesis of 0.4 mm width in one ear and 0.6 mm width in the contralateral ear.
  • Partial stapedectomy with a vein graft covering the oval window was performed.

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Main Results:

  • With the 0.4 mm prosthesis, 54 patients achieved full air-bone gap closure, and 6 were within 10 dB.
  • With the 0.6 mm prosthesis, 51 patients achieved full closure, and 8 were within 10 dB.
  • No statistically significant difference in hearing results was observed between the two prosthesis widths.

Conclusions:

  • The width of the Robinson prosthesis (0.4 mm vs. 0.6 mm) does not significantly impact hearing results in partial stapedectomy for otosclerosis.
  • Both prosthesis widths are effective in achieving air-bone gap closure when used with a vein graft.