Microanatomy And Clinical Significance Of The Oculomotor Nerve

ObjectiveStudy on the shape, length, diameter of the oculomotor nerve, adjacentstructures and blood supply, measurement and analysis, investigates theoculomotor regional anatomic structures, in order to provide anatomic data forclinical operation.MethodsIn10formalin-fixed adult complete wet head specimens (male8, female2), conventional perfusion for four arteries, all specimens of both the internalcarotid artery, vertebral arteries perfused with red latex, internal jugular veinperfusion blue latex. The superciliary arch to the ear line peeling scalp, skullcraniotomy remove sawn, removal of the hemispheres of the brain, keepCerebral peduncle the following structure, under the microscope carefullydissected the petroclival region, cavernous sinus and orbital roof, exposingoculomotor process. In10-40times operation microscope for carefullymeasurements, and anatomy the comparative analysis of the data, the data byusing SPSS10for data processing, the data withx+s, t-test.ResultsOculomotor distance the posterior clinoid process5.13±1.26mm, oculomotor nerve and posterior communicating artery distance of9.72±2.13mm, oculomotor and trochlear nerve tentorial entrance distance of10.20±2.71mm, Oculomotor nerve beneath the tentorial edge distance the trochlearnerve was2.84±0.22mm, oculomotor and trochlear nerve tentorial entrancedistance was10.20±2.71mm, the oculomotor trigone entrance in which theanterior clinoid process distance was7.47±0.32mm, distance from theposterior clinoid process distance was6.25±0.30mm, from the petrous apexdistance of9.32±0.33mm.ConclusionsThe intracranial oculomotor longer trip, taking the complex, multiple lesionsmay suffer intracranial oculomotor nerve. Clinical neurosurgeon in the treatmentof these regional lesions, should be carefully separated, Carefully pull so as notto damage the blood supply of the oculomotor nerve,the knowledge of themicroanatomy and skilled microsurgical technique and operation skill is thenecessary condition to reduce injury of oculomotor nerve.