Otosclerosis Revisited

Abstract

Introduction: Otosclerosis usually manifests as a progressive conductive or mixed hearing loss occurring clinically to varying degrees in 0.5% - 1% of the general population. Stapedectomy /stapedotomy is the current treatment of choice for conductive component of Otosclerosis.

Materials and Methods: Sixty patients attending the department of ENT of a Medical College Hospital in Bangalore between October 2012 and October 2017 were included in the study.

 Results: The incidence of otosclerosis is highest in the 3rd and 4th decade. Bilateral symptoms were present in 25% and 75% had unilateral symptoms, right side being more common in our study. Tinnitus and vertigo with deafness are seen in 60% and 25 % of the patients respectively.

 Ninety percent of the patients presented with moderate to moderately severe hearing loss. Twenty four (40%) out of 60 audiograms studied showed Carhart's notch. Postoperativeclosure of a-b gap to within 10dB could be achieved in 65% cases. The p value calculated comparing pre and post op results is <0.0001 and significant.

Vertigo was found to be most common post-operative complication (35%) followed by sensorineural hearing loss (6.6%). Other complications observed during the study include -  tympanic membrane tears, foot plate extrusion, lax long process of incus, perilymph leak.

Conclusion: From the assessment of the postoperative hearing gain and postoperative complications, it can be concluded that small fenestra stapedotomy gives satisfactory post-operative outcome and may be appropriatein the Indian scenario.