<prompt> Which condition causes the maximum hearing loss?Ossicular disruption with intact tymnpanic membraneDisruption of melleus and incus as well tympanic membranePaial fixation of the stapes footplateOtitis media with effusion  <response>: Average Hearing loss seen in different lesions of conductive apparatus: Complete obstruction of ear canal 30dB Perforation of tympanic membrane it varies and is directly propoional to the size of perforation 10-40 dB Ossicular interruption with intact drum 54 Db Closure of oval window 60 Db 