钛网应用于开放式鼓室成形术32例

目的探讨应用钛网重建外耳道后壁并上鼓室外侧壁开放式鼓室成形术中的手术疗效。方法胆脂瘤型及骨疡型中耳炎患者32例（32耳）根治病灶后，均应用钛网重建外耳道后壁并上鼓室外侧壁，同期行开放式鼓室成形术。结果术后30耳外耳道形态接近正常生理状态，29耳鼓膜移植物生长良好，干耳率90．62％，干耳时间平均（15．89±4．02）d。术后气导听力提高在15dBHL以上者27耳，区骨导差〈20dBHL者22耳。结论应用钛网重建外耳道后壁并上鼓室外侧壁的开放式鼓室成形术，可较好地恢复外耳道和中耳的解剖结构和生理功能，患者听力提高远期效果显著。

Titanium mesh applied in 32 cases of open method tympanoplasty

Objective To investigate the effect of open method tympanoplasty combined with mastoid obliteration and titanium mesh and the reconstruction of the attic wall. Methods 32 cases of cholesteatoma or skeletal ulcer otitis media accepted the open method tympanoplasty combined mastoid obliteration and titanium mesh and reconstruction of the attic wall after radical mastoidectomy. Results The external auditory canals of 30 ears were normal in ＂appearance. The transplanted membrane in 29 ears survived. The dry-ears rate was 90. 62% and the average time till dry-ears was 15.89 ±4.02 days. The air-conducting hearing levels of average language frequency were enhanced by over 15 dBHL in 27 ears. An air-bone gap of less than 20 dBHL was achieved in 22 ears. Conclusion The anatomical structure and physiological function of the external auditory canal and middle ear can recover after the above mentioned treatment with a satisfactory long-term effect in improving hearing.