Methods: The location of bony "window" and mastoid foramen were studied , and the distance from bony "window" to cerebellopontine angle was measured on 18 dry and 12 wet cranial bones.

方法：采用干性颅骨18具，福尔马林固定的头颅标本12具分别进行骨窗及乳突孔的定位测量和桥小脑角结构距骨窗的距离测定。

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The back of concha cartilage was fixed to the mastoid periost to decrease the cranioauricular angle.

将耳甲腔软骨缝合于乳突骨膜上，使耳廓和乳突的距离缩小。

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