Acoustic Effect of Malleus Head Removal and Tensor Tympani Muscle Section on Middle Ear Reconstruction
Acoustic Effect of Malleus Head Removal and Tensor Tympani Muscle Section on Middle Ear Reconstruction
复制标题
锤头切除加鼓室张肌切片对中耳重建的声学影响
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
Richard L. Goode
中科院分区：
文献类型：
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作者：
M. Asai;Joseph B. Roberson;Richard L. Goode
在因砧骨缺失而进行的耳部重建中，通常使用锤骨置换假体（IRP）来连接锤骨和镫骨。在某些情况下，有必要切除锤骨头和/或切断鼓膜张肌（TTM）肌腱。这些机动的声学效果还没有得到很好的研究。我们在颞骨模型中进行了实验，以测量这些操作对中耳声音传输的影响。测量锤骨头去除和TTM切片加锤骨置换前后的枕骨和镫骨移位。锤骨头去除后，镫骨位移在0.5kHz以下有6dB的峰值增益，在2.5kHz以上有8dB的峰值增益。TTM切片具有类似但较小的效果。描述了一个临床实例。
In the reconstruction of ears with a missing incus, an incus replacement prosthesis (IRP) is commonly used to connect malleus and stapes. In some cases, it is necessary to resect the malleus head and/or section the tensor tympani muscle (TTM) tendon. The acoustic effects of these maneuvers have not been well studied. We performed experiments in a temporal bone model to measure the effect of these maneuvers on middle ear sound transmission. Measurements of umbo and stapes displacement were made before and after malleus head removal and TTM section plus incus replacement with an IRP. After malleus head removal, there was a peak gain in stapes displacement of 6 dB below 0.5 kHz and 8 dB above 2.5 kHz. TTM section had a similar but lesser effect. A clinical example is described.