鼓膜癒着症手術の新工夫

　緒言

　近年，聴力増進手術法が盛んに研究され，耳硬化症に対しては内耳開窓術及びアブミ骨可動化手術，穿孔性中耳炎に対しては鼓室成形術が殆んど完成された観がある。しかるに鼓膜癒着症に対する聴力増進手術法の研究には見るべきものが少なく，術後成績も殆んど発表されていない。

　著者等は最近，鼓膜癒着症の手術法に新工夫を行ない，9名10耳に手術を行なつて比較的良い成績を得たので発表する。

In order to obviate the recurrence of adhe-sions following the operation for relief of adhesion in the tympanic membrane which has a strong tendency of becoming so, the authors devised a new method. Following Rosen's method of operation placing incisions in the external canal the tympanic membrane is separated as an extended separation along with the skin of the external canal. Epithelial tranplant is, now, placed over the exposed wall of the tympanic cavity ; the combined tympanic membrane and skin flap is,then, allowed to return of its original position. At times it may be necessary to bite away the handle of the maleus. By this method hearing inprovement was attained in 7 ears out of the 10 thus operated. After 2 years of obs-ervation the longest there is no evidence of cholesteatomatous formation from implanted epithelium.