A disease of the otic capsule (bony labyrinth) characterized by formation of soft, vascular bone and resulting in progressive conductive hearing loss because of fixation of the stapes and sensory hearing loss because of involvement of the cochlear duct. [oto- + G. sklerosis, hardening]

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oto·scle·ro·sis .ōt-ō-sklə-'rō-səs n, pl -ro·ses -.sēz growth of spongy bone in the inner ear where it gradually obstructs the oval window or round window or both and causes progressively increasing deafness

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a disorder causing deafness in adult life. An overgrowth of the bone of the inner ear leads to the third ear ossicle (the stapes) becoming fixed to the fenestra ovalis, which separates the middle and inner ears, so that sounds cannot be conducted to the inner ear. deafness is progressive and may become very severe, but treatment by surgery is highly effective (see fenestration, stapedectomy). Nonsurgical treatments include fluoride tablets and the provision of suitable hearing aid.

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oto·scle·ro·sis (o″to-sklə-roґsis) [oto- + sclerosis] otospongiosis of the bony labyrinth, especially adjacent to the footplate of the stapes; it may cause bony ankylosis of the stapes, resulting in conductive hearing loss. Cochlear otosclerosis may also develop, resulting in sensorineural hearing loss. otosclerotic adj

Medical dictionary. 2011.

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Look at other dictionaries:

  • Otosclerosis — Clasificación y recursos externos  Aviso médico  La otosclerosis (del griego otós: oído + sklerós: endurecimiento) es una …   Wikipedia Español

  • Otosclerosis — Classification and external resources Chain of ossicles and their ligaments. (Stapes visible near center right.) ICD 10 H …   Wikipedia

  • otosclerosis — f. otorrin. Afección del oído debido a la neoformación de tejido óseo esponjoso en la base del estribo o de la cóclea; si se llega a producir la anquilosis de uno de los dos, ocasiona sordera. El tratamiento consiste en la instauración de una… …   Diccionario médico

  • otosclerosis — (Del gr. οὖς, ὠτός, oído, y σκλήρωσις, endurecimiento). f. Med. Esclerosis de los tejidos del oído interno y medio, con formación de tejido esponjoso en la cápsula del laberinto, que conduce a la sordera …   Diccionario de la lengua española

  • otosclerosis — [ōt΄ō skli rō′sis] n. [ OTO + SCLEROSIS] a growth of spongy bone in the inner ear, causing progressive deafness otosclerotic [ōt΄ōskli rät′ik] adj …   English World dictionary

  • otosclerosis — (Del gr. us, otos, oreja + skleros , duro.) ► sustantivo femenino MEDICINA Esclerosis o endurecimiento de los tejidos del oído interno, que conduce a la sordera. IRREG. plural otosclerosis * * * otosclerosis (de «oto » y «sklḗrōsis»,… …   Enciclopedia Universal

  • otosclerosis — /oh teuh skli roh sis/, n. Pathol. formation of new bone about the stapes or cochlea, resulting in hearing loss. [1895 1900; < NL; see OTO , SCLEROSIS] * * * ▪ pathology       ear disorder characterized by the growth of excess bone in the middle… …   Universalium

  • otosclerosis — noun Etymology: New Latin Date: 1901 growth of spongy bone in the inner ear that causes progressively increasing deafness …   New Collegiate Dictionary

  • otosclerosis — n. condition characterized by formation of new bone around the bone in the middle ear (Pathology) …   English contemporary dictionary

  • otosclerosis — oto·sclerosis …   English syllables

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