Vasudev Vyshnavi, Prasad Kothegala C, Babu A Prashanth, Karunasagar Abhilasha, Varsha G Indu, Koneru Prathyusha
Department of ENT and HNS, SDUMC, Kolar, India.
Indian J Otolaryngol Head Neck Surg. 2022 Aug;74(Suppl 1):563-568. doi: 10.1007/s12070-021-02389-z. Epub 2021 Jan 26.
Endoscopic demonstration of the temporal bone and its related structures is a better tool specially for understanding the complex intricacies of the middle ear. In this study we aim to understand the anatomy of the epitympanum/attic with the aid of Otoendoscopy using transmastoid and transattic approaches. Fifty four adult cadaveric temporal bones were dissected at our centre. Transcanal and transmastoid approaches were performed to visualize the middle ear spaces. We could demonstrate Cog, a ridge of bone that extends inferiorly from the tegmen plate just anterior to the head of malleus, epitympanic diaphragm by exploring the three malleal ligamental folds, Prussak's space and its boundaries, pathways of ventilation. Better understanding of the ventilation pathways of the middle ear, restoration of adequate air access in the attic help in better healing and prevent recurrences of diseases. Thus having a three dimentional orientation of the attic and its contents aid the surgeon in performing better surgery and thus provide disease free ear.
颞骨及其相关结构的内镜显示是一种更好的工具，特别是对于理解中耳的复杂精细结构而言。在本研究中，我们旨在借助耳内镜，通过经乳突和经上鼓室入路来了解上鼓室/鼓室上隐窝的解剖结构。我们中心解剖了54块成人尸体颞骨。采用经耳道和经乳突入路来观察中耳腔。通过探查三条锤骨韧带皱襞、Prussak间隙及其边界、通气途径，我们能够显示出Cog，即一条从位于锤骨头前方的鼓室盖向下延伸的骨嵴、上鼓室隔膜。更好地了解中耳的通气途径、恢复上鼓室充足的空气进入有助于更好地愈合并预防疾病复发。因此，对上鼓室及其内容物有三维定位有助于外科医生进行更好的手术，从而使耳朵摆脱疾病。
