otosclerosis is an otic capsule disorder that leads to progressive conductive and/or sensorineural hearing loss due to stapes footplate fixation and cochlear bone involvement. the disorder is bilateral in 70% of patients and it usually starts between the third and fifth decade. one of its characteristic clinical findings is schwartze sign which refers to a reddish discoloration over the promont...

OBJECTIVE To study the success results rates and complications of stapedotomy compared to stapedectomy in the operative management of otosclerosis. METHODS This is a retrospective study of 50 patients who were treated surgically for otosclerosis. The medical records of these patients were reviewed for the type of operation performed, complications and the serial pure tune audiometries pre- an...

The prevalence of hearing impairment in university students was determined from a 6-year, pure-tone hearing screening conducted at 20 dB HL for the octave frequencies from 500 to 4000 Hz. Of the 18,424 students tested, 1.2 percent failed the screening. The ratio of unilateral to bilateral hearing impairment was found to be approximately 1:1. Sensorineural hearing loss was four times more preval...

BACKGROUND The purpose of this study was to investigate hearing threshold changes of workers with unilateral conductive hearing loss who were exposed to workplace noise for 8-years. METHODS Among 1819 workers at a shipyard in Ulsan, 78 subjects with an air-bone gap ≥10 dBHL in unilateral ears were selected. Factors that could affect hearing were acquired from questionnaires, physical examinat...

Treacher Collins syndrome (TCS) is an inherited developmental disorder. More than 40% of individuals with TCS have conductive hearing loss attributed to external and middle ear anomalies. Mild cases of TCS often pass undiagnosed at birth or early childhood. The disease may be manifested as conductive hearing loss in teenagers and may resemble juvenile otosclerosis. Patients could suffer from sl...