The location of vestibular window and the round window is relatively stable, so the stapes head can be used as a reference for drilling scala tympani.

前庭窗与圆窗的位置关系相对稳定，因此镫骨头（砧镫关节）可作为参照标志来确定鼓阶钻孔的位置。

youdao

The location of vestibular window and the round window is relatively stable, so the stapes head can be used as a reference for drilling scala tympani.

前庭窗与圆窗的位置关系相对稳定，因此镫骨头（砧镫关节）可作为参照标志来确定鼓阶钻孔的位置。

youdao