耳硬化症の耳鳴に対するアブミ骨手術の効果

The Effect of Stapes Surgery for Tinnitus in Otosclerosis

　はじめに

　耳硬化症についての臨床的関心はその聴力改善が中心であるが，自覚症状として，難聴とともに高頻度に認められる耳鳴についての詳細な報告は決して多くはない。今回，耳硬化症の手術症例における耳鳴について，その特徴を検討した。

The results of 22 stapes surgeries for otosclerosis were analyzed over one-year period. Twenty-one Patients (95%) had tinnitus preoperatively. Thin-itus after stapes surgery was “markedly improved” in 6 patients (27%), “improved” in 9 (41%), “poor” in 6 (27%), and “worsened” in 1 (5%). The overall improvement rate was 68%, and tinnitus was com-pletely ceased in 6 patients (27%). The improve-ment rate was higher in patients underwent partial stapedectomy or stapedotomy than in those under-went total stapedectomy. The tinnitus frequency areas were estimated by onomatopoeias, and the stapes surgeries were more effective in patients with low frequency tinnitus.