Kodama A, Sando I
Ann Otol Rhinol Laryngol Suppl. 1982 Jul-Aug;96:13-20.
The purpose of this study was to investigate the anatomy of the vestibular aqueduct (VA) and rugose portion (RP) of the endolymphatic sac. Serial horizontal sections of 79 normal temporal bones of individuals aged 20 to 102 years were used. Medial view graphic reconstruction of the VA was performed for each specimen to determine the area, length, angle and position of the VA. The relationship between the width of the VA and the area of the VA, and the relationship between the degree of development of the VA and the degree of development of the temporal bone (periaqueductal pneumatization and the otic capsule in the periaqueductal region) were also investigated. Measurements of the RP were also made and further histological study of the RP was performed on 30 selected specimens. We found that 1) the VA in adult temporal bone varies in size and can be classified as hypoplastic, normoplastic, or hyperplastic; 2) many of the VAs in each group have similar sizes, although they vary in length, angle, or position; 3) all or most of the RP was located within the VA in all but one specimen, which had a hypoplastic VA (in this specimen more than half of the entire RP extended into the posterior cranial fossa); 4) the histology of the RP was characteristic in each type of VA; and 5) the degree of development of the VA seems to correlate with the degree of development of the otic capsule in the periaqueductal region.
本研究的目的是调查内淋巴囊的前庭导水管（VA）和皱襞部分（RP）的解剖结构。使用了79例年龄在20至102岁的正常颞骨的连续水平切片。对每个标本进行VA的内侧视图图形重建，以确定VA的面积、长度、角度和位置。还研究了VA的宽度与VA面积之间的关系，以及VA的发育程度与颞骨发育程度（导水管周围气化和导水管周围区域的耳囊）之间的关系。对RP也进行了测量，并对30个选定的标本进行了RP的进一步组织学研究。我们发现：1）成人颞骨中的VA大小各异，可分为发育不全、正常发育或增生；2）每组中的许多VA大小相似，尽管它们在长度、角度或位置上有所不同；3）除了一个VA发育不全的标本外（在该标本中，整个RP的一半以上延伸至后颅窝），所有或大部分RP都位于VA内；4）每种类型的VA中RP的组织学特征明显；5）VA的发育程度似乎与导水管周围区域耳囊的发育程度相关。
