Smith P G, Stroud M H, Goebel J A
Otolaryngol Head Neck Surg. 1986 Mar;94(3):355-9. doi: 10.1177/019459988609400317.
A simple method of reconstructing a previously removed posterior ear canal with an autogenous, bilaminar membrane is described. The resulting air-filled mastoid cavity is an anatomic extension of the middle ear cleft and is separated from the ear canal by a functional barrier that is continuous with the tympanic membrane. The acoustic characteristics of an associated tympanoplasty are not significantly altered, and many of the problems that are associated with an exteriorized cavity are avoided. In contradistinction to other methods of mastoid obliteration or reconstruction, the semitransparent nature of the soft canal wall allows inspection of the underlying cavity for residual or recurrent disease. The technique can be used to repair either a newly created cavity or a previous radical (or modified radical) mastoidectomy defect. The functional results of thirty ears reconstructed in this fashion are detailed. A variable amount of soft-wall retraction was noted postoperatively in 47% of the ears; however, the long-term functional results in these cases remain satisfactory.
本文描述了一种用自体双层膜重建先前切除的外耳道后壁的简单方法。由此形成的充满空气的乳突腔是中耳裂的解剖延伸，并且通过与鼓膜连续的功能性屏障与外耳道分隔开。相关鼓室成形术的声学特性没有显著改变，并且避免了许多与外置腔相关的问题。与其他乳突闭塞或重建方法不同，软质耳道壁的半透明性质允许检查下方的腔隙以发现残留或复发性疾病。该技术可用于修复新形成的腔隙或先前的根治性（或改良根治性）乳突切除术缺损。详细介绍了以这种方式重建的30只耳朵的功能结果。术后47%的耳朵出现了不同程度的软壁回缩；然而，这些病例的长期功能结果仍然令人满意。
