岡大教室における内耳手術の成績

A SUMMARIZED RESULTS OF INNER EAR SURGERY

　Ⅰ．緒言

　聴力増進を目的とした内耳手術には外側半規管に開窓を行なう内耳開窓術（standard fenestration，classical fenestration）と卵円窓に手術操作を加える鐙骨手術（stapes surgery）がある。われわれはこれら内耳手術を，耳硬化症や伝音系奇形耳はもちろんのこと慢性中耳炎の聴力増進を目的とした二次的手術としても行なつている。過去15年間にわが教室で行なつたこれら内耳手術の成績を検討したので発表する。

　For the period of 15 years from 1954 to 1969. The fenestration operation and stapes surgery have been employed for treatment of deafness caused by otosclerosis, conduction deafness and chronic otitis media, at the Otolarygological department of the Okayama University Medical School. The results are summarized as follow:

　1. The fenestration operation was performed upon 93 patients, 120 ears, comprising of conduction deafness, 61 ears; otosclerosis, 43 ears and as a secondary measure in treatment of deafness in chronic otitis media, 16 ears.

　2. The stapes surgery was performed on 19 patients, 21 ears, consisting of conduction deafness, 6 ears; otosclerosis, 8 ears and chronic otitis media, 7 ears.

　3. The operative results on the whole were quite satisfactory.

　4. In this country where otosclerosis is relatively rare in occurrence, the inner ear surgery may well be adapted for the treatment of severe conduction deafness. For this purpose, either, fenestration operation or stapes surgery may be selected to adequately meet the situation.