Otosclerosis Flashcards
What is otosclerosis?
A condition where there is remodelling of the small bones in the middle ear
What type of hearing loss does otosclerosis lead to?
Conductive hearing loss
What is the pathophysiology of otosclerosis?
The remodelling of the bones in the middle ear primarily affects the base of the stapes, where it attaches to the oval window
This causes stiffening, and fixation - preventing it from transmitting sound
What is the typical presentation of otosclerosis?
Hearing loss
Tinnitus
Patient under 40
What type of sounds does otosclerosis tend to affect?
Lower-pitched sounds
What is the initial investigation for otosclerosis?
Audiometry
What is seen on audiometry in otosclerosis?
Bone conduction readings normal
Air conduction readings greater than 20 dB
What is the management of otosclerosis?
Hearing aids
Stapedectomy or stapedotomy
