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A 46-year-old male with an earpick-induced trauma in his left ear was referred to our hospital due to profound mixed hearing loss persisting after myringoplasty at another hospital. The preoperative middle ear CT did not demonstrate any ossicular chain dislocation signs. Preoperative tympanometry did not show a clear Ad type, but stapedial reflex was eliminated on the left side. During middle ear surgery, we found the stapedial footplate had subsided and fixed into the oval window, although the ossicular chain seemed to remain intact. After stapedectomy with ossicular reconstruction using Y-shaped cartilage was performed the air-bone gap definitely improved. There have been many reports about ossicular chain dislocation due to earpick-induced trauma, however there have been few reports describing stapedial footplate subsidence into the oval window without ossicular chain dislocation. In the literature, 10-25% of trauma-induced ossicular chain dislocation may just be stapedial subsidence into the oval window. We conclude as that it is necessary to consider stapedial subsidence when treating middle ear trauma, and that stapedial subsidence on its own should be classified as a pattern of ossicular chain disruption.

Earpick-Induced Middle Ear Trauma; Stapedial Footplate Subsided into the Oval Window without Ossicular Chain Dislocation