Evaluation of Functional Outcomes after Stapes Surgery in Patients with Clinical Otosclerosis in a Teaching Institution
Introduction: Otosclerosis is a primary disease of the temporal bone, leading to stapes ankylosis. Hearing loss is the main symptom. Treatment includes surgery, medical treatment, and sound amplification therapy alone or in combination.
Objective: Evaluate the functional outcomes of patients with clinical diagnosis of otosclerosis undergoing primary stapes surgery in teaching institution.
Methods: Retrospective study.
Results: Among 161 patients, 206 ears underwent stapes surgery. Of the 161 patients, 116 (72.05%) patients underwent unilateral surgery and 45 patients (27.95%) underwent bilateral surgery. Among the 206 operated ears, 8 had obliterative otosclerosis. The average air-bone gap preoperatively was 32.02 dB, and postoperatively, 5.17 dB. The mean preoperative bone conduction threshold was 23.03 dB and postoperative 19.99 dB. 176 (85.4%) ears had residual air-bone gap lower than 10 dB, 191 cases (92.7%) had residual air-bone gap equal to or less than 15 dB. Two cases (0.97%) had severe sensorineural hearing loss.
Conclusion: Stapes surgery shows excellent functional hearing outcome, even in an educational institution as long as with the supervision of experienced surgeons.