When the round window niche is not found,the location of the insertion has to be at the middle point of the inferior margin of the base of stapes deorsum mm.
When the round window niche is not found,the location of the insertion has to be at the middle point of the inferior margin of the base of stapes deorsum mm.
在圆窗龛显示困难的病例,植入点应定位于距镫骨底板下缘中点下方约 mm处。