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otosclerosis
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otosclerosis

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Also known as otospongiosis

Otosclerosis is a condition of the middle and inner ear where portions of the dense enchondral layer of the bony labyrinth]] remodel into one or more lesions of irregularly-laid spongy bone. As the lesions reach the stapes the bone is resorbed, then hardened (sclerotized), which limits its movement and results in hearing loss, tinnitus, vertigo or a combination of these. The term otosclerosis is something of a misnomer: much of the clinical course is characterized by lucent rather than sclerotic bony changes, so the disease is also known as otospongiosis.

Key facts

Medical condition (new).name
Otosclerosis
Medical condition (new).image
Gray919.png
Medical condition (new).caption
Chain of ossicles and their ligaments. (Stapes visible near center right.)
Medical condition (new).field
Otorhinolaryngology
Medical condition (new).synonyms
Otospongiosis

via Wikipedia infobox

Research

6,448 papers

via PubMed

Wikidata facts

Image
Gray919.png
Show 7 more facts
health specialty
otolaryngology
ICPC 2 ID
H83
Commons category
Otosclerosis
ICD-9-CM
387.8
NCI Thesaurus ID
C185242
studied by
audiology
Sources (6)

via Wikidata · CC0

~15 min read

Encyclopedic overview

16 sections
Contents
  • Etymology
  • Presentation
  • Causes
  • Pathophysiology
  • Diagnosis
  • Differential testing
  • Audiometry
  • CT imaging
  • Treatment
  • Medical
  • Surgical
  • Amplification
  • Society and culture
  • Notable cases
  • References
  • External links

Otosclerosis is a condition of the middle and inner ear where portions of the dense enchondral layer of the bony labyrinth]] remodel into one or more lesions of irregularly-laid spongy bone. As the lesions reach the stapes the bone is resorbed, then hardened (sclerotized), which limits its movement and results in hearing loss, tinnitus, vertigo or a combination of these. The term otosclerosis is something of a misnomer: much of the clinical course is characterized by lucent rather than sclerotic bony changes, so the disease is also known as otospongiosis.

==Etymology== The word otosclerosis derives from Greek ὠτός (ōtos), genitive of οὖς (oûs) "ear" + σκλήρωσις (sklērōsis), "hardening".

Excerpted from Wikipedia’s “otosclerosis” article, available under the CC BY-SA 4.0 licence.

Gallery (6)