Ossicular Chain Dysfunction
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OSSICULAR CHAIN DISARTICULATION
WHAT IS OSSICULAR CHAIN DISARTICULATION?
Ossicles (middle ear bones) separating due to partial or complete fracture of the malleus, incus, and/or stapes.
Ossicular chain is broken!
SIGNS & SYMPTOMS: sudden conductive hearing loss possibly dizziness and balance problems in severe cases, headaches
Otoscopy may show hemotympanum and ear canal abrasions
Tympanic membrane may be perforated
CAUSES:
Chronic otitis media fracture in the temporal - the bones at the base or side of the skull cholesteatoma: benign tumor caused by the accumulation of protein and skill cells behind the eardrum congenital ear malformation: the ossicular bones are not properly formed
LEVEL OF CONDUCTIVE HEARING LOSS: with perforated TM →