To evaluate our experience with a self-crimping stapes prosthesis.
Retrospective case review.
Tertiary referral center.
All patients diagnosed with otosclerosis who underwent surgery between June 2013 and June 2020. Inclusion criteria were 18 years or older, isolated stapes ankylosis, and at least 1 year of postoperative audiologic data.
CO2 laser stapedotomy undertaken by the same surgeon using the same CO2 laser stapedotomy technique and the same prosthesis.
Main Outcome Measure(s)
Preoperative and postoperative audiologic data including air-bone gap (ABG) measurements, average speech discrimination score and pure-tone averages (PTAs). Postoperative hearing assessments were performed at 3 weeks, 3 months, 6 months, 1 year, and annually thereafter.
Two hundred fourteen patients were included in the study, of whom 17 had bilateral sequential surgery for a total of 231 ears. Mean preoperative air conduction-PTA was 58.8 dB and mean preoperative bone conduction-PTA 24.2 dB, a preoperative ABG of 34.6 dB. One year postoperatively, mean air conduction-PTA improved to 31.2 dB (p < 0.0001). ABG showed a significant improvement from 34.6 to 5.5 dB (p < 0.0001). Closure of the ABG to within 10 dB was achieved in 87% ears at 3 months, in 91% at 6 months, and in 93% at 1 year. There was no significant difference in preoperative and postoperative average speech discrimination score.
The current study demonstrates favorable audiologic outcomes in a large cohort of patients using a self-crimping stapes prosthesis. These results were stable for up to 7 years on follow-up.