Middle Ear Otosclerosis

Question 1

Otosclerosis

Answer 1

Disorder of inner ear

Excessive vascularization and bone deposition

Most common site of invasion is round window and footplate of stapes

Originates in bong labyrinth of inner ear

Immobilizes stapes in oval window

Question 2

Otosclerosis affects how many males and females

Answer 2

7. 3% male

10. 3 female

Question 3

Otosclerosis causes HL in what percent of population

Answer 3

.3%

Question 4

What ratio of patients treated are female (otosclerosis)

Answer 4

2/3

Question 5

What percent of cases are bilateral (otosclerosis)

Answer 5

75%

Question 6

Etiology of otosclerosis

Answer 6

Genetic 50-70%

Viral

Question 7

Symptoms of otosclerosis

Answer 7

Schwartz

Tinnitus

Other usual signs of conductive HL

Question 8

Audiometric findings

Answer 8

Conductive HL
Rising
Carharts notch

Question 9

Treatment

Answer 9

Fluoride

Surgery 
Fenestration
Stapes mobilization
Stapedectomy
Stapedotomy

Question 10

Stapedectomy

Answer 10

Micro surgical
Through ear canal
General/local

Eardrum incision

Question 11

Other middle ear pathologies

Answer 11

Loss of consciousness

Bleeding from ear

Hearing loss