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Reconstruction of the ossicular chain with hydroxyapatite implants
Summary
Dense hydroxyapatite incus prostheses significantly improve hearing in reconstructive middle ear surgery. Most patients achieved substantial air-bone gap closure, with results remaining stable over a 2-year follow-up.
Area of Science:
- Otolaryngology
- Biomaterials Science
- Surgical Innovation
Background:
- Middle ear reconstructive surgery aims to restore hearing function.
- Hydroxyapatite is a biocompatible material with potential for ossicular reconstruction.
Purpose of the Study:
- To evaluate the clinical outcomes of dense hydroxyapatite incus prostheses.
- To assess hearing improvement and stability following middle ear surgery.
Main Methods:
- Clinical study involving 60 patients undergoing middle ear surgery.
- Application of dense hydroxyapatite incus prostheses.
- Audiometric evaluation of air-bone gap closure and hearing gain.
Main Results:
- 86.6% of patients achieved an air-bone gap closure within 20 dB.
- 60.6% of patients experienced an air-bone gap closure of less than 10 dB.
- Hearing gain remained stable over a 1-4 year follow-up period (average 2 years).
Conclusions:
- Dense hydroxyapatite incus prostheses demonstrate significant efficacy in improving hearing.
- Hydroxyapatite is a viable material for reconstructive middle ear surgery.
- The observed hearing improvements are durable and consistent over time.
