Outcome of ossiculoplasty in Kyoto University Hospital.

Abstract

Conclusion: We performed ossiculoplasty under conditions preventing inflammation by adopting a planned staged operation, which is suitable for ossiculoplasty using an artificial prosthesis. We identified the presence of chorda tympani nerve as a candidate predictive factor for successful ossiculoplasty.

Objectives: We aimed to summarize the outcome of ossiculoplasty and to find factors to improve the success rate.

Methods: This was a retrospective chart review of 96 patients who underwent ossiculoplasty in Kyoto University Hospital from 2001 to 2008. Patients' backgrounds, hearing outcomes, and surgical procedures were analyzed. To find predictive factors for successful ossiculoplasty, we performed logistic regression analysis.

Results: The improvement in the mean air conduction level was 12.9 dB. The mean postoperative air-bone gap (ABG) was 25.0 dB. The ABG decreased to within 20 dB in 40.7% of the cases. As a result of univariate logistic regression analysis, primary or planned second stage surgery, closed mastoid cavity, and presence of the chorda tympani nerve were identified as favorable factors for successful ossiculoplasty.