Perilymphatic fistula occurs in a patient after various trauma-lifting straining coughing or other vigorous activities. Barotrauma, stapedectomy and perilymphatic hypertension etc. Traumatic perilymphatic fistula is found frequently in round
window,
oval windowor both, whereas in general perilymphatic fistula is found mostly in lateral semicircular canal. Hearing loss following activities is thought to be an indication for surgical exploration. Perilymphatic fistula is grafted with bone
chips,
periosteum, cartilage, perichondrium, bone paste, musculoperiosteal flap, gelfoam, fat or fascia etc.
On April 18, 1991, we experienced a case of traumatic perilymphatic fistula by umbrella' s rod in a 42 year old female, Perilymphatic fistula was grafted with blood clot and musculoadipose tissue around oval around oval window. And perforated
tympanic
membrane was grafted with deep temporalis fascia.
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