Long-term results with hydroxylapatite middle ear implants

Otolaryngol Head Neck Surg. 2000 May;122(5):635-42. doi: 10.1016/S0194-5998(00)70188-4.

Abstract

Purpose: This study evaluated long-term results in patients who had ossicular reconstruction with a Goldenberg hydroxylapatite implant.

Methods: A total of 233 patients underwent implantation; of these, 77 had 5-year or longer follow-up and are the subjects of this study of long-term hearing results. All 233 patients were included for analysis of extrusion rate and postoperative otorrhea.

Results: The hearing success rate at long-term follow-up was 56.8%; the mean air-bone gap was 21.1 dB. Prosthesis extrusion occurred in 5.29% of the 233 patients, and visible slippage occurred in 7.7%. Overall, 50. 6% of patients met the criteria for successful hearing, which included no extrusion and a dry ear. Better hearing before surgery and presence of the malleus long process were factors associated with a successful hearing result, as was tympanoplasty alone and canal wall up tympanomastoidectomy.

Conclusion: Hydroxylapatite hybrid prostheses provide stable hearing results over time with low extrusion and a dry ear overall.

MeSH terms

  • Adult
  • Biocompatible Materials*
  • Durapatite*
  • Follow-Up Studies
  • Hearing
  • Humans
  • Middle Aged
  • Ossicular Prosthesis* / adverse effects
  • Ossicular Replacement*
  • Prognosis
  • Prosthesis Design
  • Prosthesis Failure

Substances

  • Biocompatible Materials
  • Durapatite