Sadé J, Yaniv E, Avraham S, Fuchs C, Sacs B
Am J Otol. 1985 May;6(3):257-62.
Our study of 205 ears with missing stapes, secondary to some type of chronic ear disease, showed that only 40% of such ears are suitable for ossiculoplasty. The remaining 60% are unsuitable because of a fixed footplate, severe atelectasis, hearing better than 25 dB (these patients do not need the operation), or poor discrimination. A new stapes replacement prosthesis (SRP), which we term Tabor, is described for use where indicated. The prosthesis has two parts: The lower part (or base) is made of a broad inorganic, biocompatible material (Teflon). This part fits and covers most of the footplate, ensuring maximal stability. The upper part of the prosthesis is made of autograft or homograft bone--usually a malleus head--the contact of which with the drum prevents extrusion. In twelve out of fourteen ears insertion of this prosthesis was successful; the average postoperative air conduction went from 56 dB to 29 dB, leaving an average air-bone gap of 16 dB. The bone conduction also improved, from an average of 20 dB to 13 dB.
我们对205例因某种慢性耳部疾病导致镫骨缺失的耳朵进行了研究，结果显示，这类耳朵中只有40%适合进行听骨链成形术。其余60%不适合，原因包括固定的镫骨底板、严重的肺不张、听力优于25分贝（这些患者不需要手术）或辨别力差。本文介绍了一种新的镫骨置换假体（SRP），我们称之为泰伯（Tabor）假体，适用于有指征的情况。该假体有两部分：下部（或基部）由一种宽阔的无机生物相容性材料（聚四氟乙烯）制成。这部分适合并覆盖大部分镫骨底板，确保最大稳定性。假体的上部由自体移植骨或同种异体移植骨制成——通常是锤骨头——其与鼓膜的接触可防止其脱出。在14只耳朵中的12只中，该假体的植入是成功的；术后平均气导从56分贝降至29分贝，平均气骨导间距为16分贝。骨导也有所改善，从平均20分贝降至13分贝。
