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目的：探讨卵圆窗龛后隐窝的形态、变化规律及其与邻近结构的关系。方法：在１００侧干颞骨标本和２０侧湿标本上，对卵圆窗龛后隐窝及其毗邻结构进行观察和测量。结果：卵圆窗龛后隐窝是位于卵圆窗后部的一个三角形骨性隐窝，其前后径、上下径及深度在干标本上分别为（１．９±０．２）ｍｍ、（２．０±０．２）ｍｍ和（１．７±０．３）ｍｍ；在湿标本上则分别为（２．１±０．３）ｍｍ、（１．８±０．３）ｍｍ和（１．６±０．３）ｍｍ。岬小桥是一个关键性的结构，在１２０侧标本上，其形态可分为桥状，占６２．５％（７５侧）；埂状的占２０．０％（２４侧）；板状的占１７．５％（２１侧）。根据卵圆窗龛后隐窝与邻近结构的关系，可分为两型：①局限型（Ⅰ型）占５９．２％（７１侧）；②延伸型（Ⅱ型）占４０．８％（４９侧）。构成卵圆窗龛后隐窝后上界的面神经管凸有４２．５％（５１侧）有裂隙，且多在近隐窝的上方。结论：这些资料为临床后鼓室病灶清除术和镫骨手术提供了形态学基础
OBJECTIVE: To investigate the morphological changes of crypts and their relationship with adjacent structures after oval window niches. Methods: After 100 temporal and temporal bone specimens and 20 wet specimens, the posterior crypt and its adjacent structures were observed and measured. Results: The posterior recess of the oval window was a triangular recess located in the posterior part of the oval window. The anteroposterior diameter, vertical diameter and depth of the oval window were (1.9 ± 0.2) mm, 2.0 ± 0.2 mm and 1.7 ± 0.3 mm, respectively. On the wet specimens, they were (2.1 ± 0.3) mm, (1.8 ± 0.3) mm and (1.6 ± 0.3) mm. Cape bridge is a key structure in 120 specimens, the shape can be divided into bridge, accounting for 62.5% (75 side); 埂 shaped accounts for 20.0% (24 sides); plate-shaped Accounting for 17.5% (21 sides). According to the relationship between crypts and adjacent structures in the oval window niches, there are two types: (1) 59.2% (71 sides) of the limited type (Ⅱ), 40.8% (Ⅱ) 49 side). 42.5% (51 sides) of the facial neural tube convexities that form the upper posterior recess of the oval window niche have fissures, and are mostly above the near crypt. Conclusions: These data provide the morphological basis for post-clinical tympanotomy and tarsal surgery