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.
