Yu Z, Zhang L, Han D
Department of Otorhinolaryngology-Head and Neck Surgery,Beijing Tongren Hospital affiliated to Capital Medical University,PR China.
J Laryngol Otol. 2014 Oct;128(10):866-70. doi: 10.1017/S0022215114002023. Epub 2014 Sep 24.
To observe the long-term outcome of ossiculoplasty using autogenous mastoid cortical bone in chronic otitis media in-patients.
Sixty-one ears of 57 in-patients with chronic otitis media, with or without cholesteatoma, underwent type III tympanoplasty using autogenous mastoid cortical bone as the prosthetic material. Twenty-one ears were treated by canal wall down mastoidectomy and 40 ears by canal wall up mastoidectomy. The follow-up period was 3 to 6 years (average 4.2 years). Pure tone averages for thresholds at 0.5, 1, 2 and 3 kHz were calculated using standard conventional audiometry.
The pre-operative mean air-bone gap of 31.6 dB, for all ears, was reduced to 20.3 dB post-operatively. For the 40 canal wall up ears, this value decreased from 30.8 dB to 19.9 dB, and for the 21 canal wall down ears it decreased from 33.0 dB to 21.0 dB. The differences between the pre- and post-operative mean air-bone gap values were significant.
No cases of extrusion, necrosis or resorption were exhibited for the autogenous mastoid cortical bone prosthesis. A significant hearing improvement was obtained in the majority of cases and this remained stable over time.
观察慢性中耳炎住院患者采用自体乳突皮质骨进行听骨链重建的远期疗效。
57例慢性中耳炎住院患者（伴或不伴胆脂瘤）的61耳，采用自体乳突皮质骨作为修复材料进行Ⅲ型鼓室成形术。21耳行开放式乳突根治术，40耳行完壁式乳突根治术。随访时间为3至6年（平均4.2年）。使用标准常规听力测定法计算0.5、1、2和3kHz处阈值的纯音平均听阈。
所有耳术前平均气骨导差为31.6dB，术后降至20.3dB。40耳完壁式手术者，该值从30.8dB降至19.9dB，21耳开放式手术者从33.0dB降至21.0dB。术前和术后平均气骨导差值之间的差异具有统计学意义。
自体乳突皮质骨修复材料未出现排斥、坏死或吸收的情况。大多数病例听力得到显著改善，且随时间保持稳定。
