Dallan I, Seccia V, Lenzi R, Castelnuovo P, Bignami M, Battaglia P, Muscatello L, Sellari-Franceschini S, Tschabitscher M
Unit of Otorhinolaryngology, Azienda Ospedaliero-Universitaria Pisana, Via Paradisa 2, Pisa, Italy.
Minim Invasive Neurosurg. 2010 Aug;53(4):164-8. doi: 10.1055/s-0030-1263106. Epub 2010 Dec 3.
The aim of this study was to illustrate the anatomy of the medial compartment of the orbit by comparing the endoscopic transnasal perspective with the external ones.
8 orbits from 5 double-injected heads were carefully dissected. An endoscopic anterior transconjunctival dissection was performed in one orbit while an endoscopic transnasal intraconal dissection was conducted in 3 orbits. External dissections (from medial, superior and anterior perspective) were also performed.
The role of the medial rectus muscle is emphasised. It represents the first important landmark encountered, covering all the other structures during transnasal approaches. By displacing it, the medial intraconal space with its contents becomes visible: the ophthalmic artery and related branches, the superior ophthalmic vein, the nasociliary nerve and, in the deepest part of the medial compartment, the optic nerve.
The medial compartment of the orbit can be addressed transnasally. By displacing the medial rectus muscle, it is possible to gain adequate space for the instruments and to control all of the medial compartment, including the medial aspect of the optic nerve.
本研究的目的是通过比较经鼻内镜视角与外部视角来阐明眼眶内侧间隙的解剖结构。
对来自5个双重注射标本头部的8个眼眶进行仔细解剖。在1个眼眶中进行了内镜下经结膜前路解剖，在3个眼眶中进行了内镜下经鼻眶内解剖。还进行了外部解剖（从中部、上部和前部视角）。
强调了内直肌的作用。它是首先遇到的重要标志，在经鼻入路过程中覆盖所有其他结构。通过移位内直肌，其内部的眶内间隙及其内容物变得可见：眼动脉及其相关分支、眼上静脉、鼻睫神经，以及在眼眶内侧间隙的最深处，视神经。
眼眶内侧间隙可经鼻处理。通过移位内直肌，可为器械获得足够的空间，并控制整个内侧间隙，包括视神经的内侧部分。
