Related Experiment Videos
Promontory drilling in stapedectomy
William H Lippy1, Leonard P Berenholz, Arnold G Schuring
1The Lippy Group for Ear, Nose, and Throat, 3893 East Market Street, Warren, OH 44484, USA.
Summary
Drilling the promontory during stapedectomy for narrow oval windows is effective, with 96% success and minimal impact on hearing. This technique is safe and does not contraindicate the procedure.
Area of Science:
- Otolaryngology
- Neurosurgery
- Audiology
Background:
- Stapedectomy is a surgical procedure to restore hearing in patients with otosclerosis.
- A narrow oval window niche can complicate stapedectomy, sometimes necessitating promontory drilling.
- The safety and efficacy of promontory drilling require evaluation.
Purpose of the Study:
- To assess the clinical outcomes and audiometric results of stapedectomy involving promontory drilling.
- To specifically evaluate the impact of promontory drilling on bone conduction hearing.
Main Methods:
- Retrospective study of 25 patients undergoing stapedectomy with promontory drilling.
- Comparison with 25 stapedectomy patients who did not require promontory drilling.
- Preoperative and postoperative audiometric testing, including bone conduction, with a minimum 6-month follow-up.
Main Results:
- 96% of stapedectomies with promontory drilling achieved successful outcomes (air-bone gap <10 dB).
- Associated findings included facial nerve overhang and obliterated footplate.
- A slight improvement in mean bone conduction was observed postoperatively, with no significant increase in acoustic trauma.
Conclusions:
- Promontory drilling is an infrequent but safe and effective adjunct in stapedectomy for narrow oval windows.
- The procedure has minimal impact on hearing and is not a contraindication.
- Clinical success rates are high, with no reported intraoperative or postoperative complications like tinnitus or vertigo.