Title: Variability of the round window niche entry in children and adults

標(biāo)題：兒童與成人的圓窗龕入口變異性

Content/內(nèi)容：

1) The round window niche entry (fossula fenestrae cochleae, fossula fenestrae rotundae) is one of the main structures in the labyrinthine wall of the tympanic cavity.

圓窗龕入口（耳迷路小窩窗、圓頂小窩窗）是鼓室腔迷路壁的主要結(jié)構(gòu)之一。

2) Its variability is fairly significant and very important in otosurgery.

其變異性相當(dāng)明顯，在耳手術(shù)中十分重要。

3) In order to learn more about the morphology of the round window niche entry, a microanatomical study on 100 temporal bones obtained from cadavers aged 0 - 71 y. was performed.

為了深入了解圓窗龕入口的形態(tài)學(xué)，顯微解剖分析100例0~71歲尸體顳骨標(biāo)本。

4) Five morphological forms of the round window niche entry were differentiated: triangular, semicircular, ovally horizontal, ovally vertical and round ones.

共鑒別出5種圓窗龕入口形態(tài)：三角形、半圓形、水平卵圓形、豎卵圓形及圓形。

5) Triangular forms were observed only in children of over 4 years of age and round forms almost only in young children, of age below this borderline (the beginning of pneumatization of the temporal bone).

三角形僅見(jiàn)于4歲以上兒童，圓形幾乎僅見(jiàn)于顳骨內(nèi)氣腔始形成年齡以下的幼兒。

6) The differences between these two groups were statistically significant.

這兩組的差異性具有統(tǒng)計(jì)學(xué)意義。

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