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首页> 外文期刊>Neurosurgery >Microanatomical architecture of Dorello's canal and its clinical implications.
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Microanatomical architecture of Dorello's canal and its clinical implications.

机译：Dorello运河的微观解剖结构及其临床意义。

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OBJECTIVE: We investigated the membranous architecture of the abducens nerve at the petroclival region and describe the characteristics of this area in cadaveric specimen and two children with hydrocephalus and sixth nerve palsy using magnetic resonance imaging (MRI). MATERIALS AND METHODS: Five adult cadaver heads were used to investigate the petroclival part of the abducens nerve. The heads were injected with colored latex for microsurgical dissection, and the length of the dural sleeve of the abducens nerve and its width at the apex were measured. In one cadaver head, the area between the petroclival entrance porus of the abducens nerve and the cavernous sinus was histologically studied under light microscopy. In two patients with hydrocephalus and abducens nerve palsy, the petroclival area was screened by using the MRI fat suppression technique. RESULTS: In the cadavers, the arachnoid membrane on the clivus extended within the dural sleeve as far as the petrous apex, as an extension of the subarachnoid space. The average length of the dural sleeve was 9.5 mm and the average width was 1.5 mm at the apex, where the nerve entered the cavernous sinus. MRI scans showed that the cerebrospinal fluid distance of the petroclival region was 5 mm in the first patient and 7 mm in the second. CONCLUSION: The subarachnoid space inside the dural sleeve of the abducens nerve can be defined by using thin-slice MRI scans. Enlargement of the dural sleeve at the petroclival region may coexist with the abducens nerve palsy. It has been documented in this study that the arachnoid membrane forms a membraneous barrier between the subarachnoid and subdural spaces within Dorello's canal.
机译：目的：我们通过磁共振成像（MRI）研究了在石斜坡区域的外展神经的膜结构，并描述了尸体标本和两个儿童脑积水和第六神经麻痹的这一区域的特征。材料与方法：使用五个成年尸体头来研究外展神经的岩斜部分。头部注射有色乳胶以进行显微外科解剖，并测量外展神经硬膜套筒的长度及其在顶点的宽度。在一个尸体头上，在光学显微镜下组织学研究了外展神经的岩斜入口孔与海绵窦之间的区域。在两名患有脑积水和外展神经麻痹的患者中，使用MRI脂肪抑制技术筛查了石斜坡区。结果：在尸体中，附着在蛛网膜上的蛛网膜延伸至硬膜顶端，直至蛛网膜下腔。硬脑膜的平均长度为9.5 mm，在神经进入海绵窦的顶点的平均宽度为1.5 mm。 MRI扫描显示，第一位患者的石斜坡区脑脊液距离为5 mm，第二位患者的为7 mm。结论：可以通过薄层MRI扫描确定外展神经硬脑膜内蛛网膜下腔。岩石斜坡区域的硬脑膜套肿大可能与外展神经麻痹并存。在这项研究中已记录到蛛网膜在蛛网膜下腔和硬膜下腔之间形成了膜状屏障。

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