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目的观察桥小脑角区面神经根滋养动脉的来源和入根位置,为临床应用提供解剖学资料。方法采用经10%甲醛固定、蛛红明胶灌注的成人头颅标本22具,在手术显微镜下解剖观察。结果①桥小脑角面神经运动根滋养动脉主要来自脑桥小脑间隙动脉袢(31支,50.8%)和小脑下前动脉侧支(17支,27.9%),其次分别为迷路动脉(8支,13.1%)、小脑下后动脉(3支,4.92%)及基底动脉(2支,3.28%);②面神经运动根滋养动脉主要经运动根的内1/3段(47支,77.05%)入根;③中间神经滋养动脉主要来自脑桥小脑间隙动脉袢(36支,73.47%),其次为小脑下前动脉侧支(7支,14.29%)和迷路动脉(6支,12.24%)。结论桥小脑角区面神经根滋养动脉的显微解剖,对于进一步揭示半面痉挛的病因及指导桥小脑角区的显微外科手术具有重要的临床意义。
Objective To observe the origin and position of nodal nodal artery in the cerebellopontine angle and provide anatomic data for clinical application. Methods Twenty-two adult skull specimens fixed with 10% formalin and spider red gelatin were dissected and observed under a surgical microscope. Results The nociceptive motor of the cerebellopontine motor mainly originated from the interlobular cerebellar crest artery (31 branches, 50.8%) and the inferior cerebellar artery collateral artery (17 branches, 27.9%), followed by the lost artery (8 branches, 13.1% (3 branches, 4.92%) and the basilar artery (2 branches, 3.28%). ② The nodal artery of the facial nerve moved mainly into the root through the inner 1/3 segment (47 branches, 77.05%) of the moving root. (3) Nerve nourishing artery mainly came from the psoas cerebella (36 branches, 73.47%), followed by inferior cerebellar artery collaterals (7 branches, 14.29%) and labyrinthine artery (6 branches, 12.24%). Conclusions The microdissection of the nourish artery of the facial nerve root in the cerebellopontine angle has important clinical significance for further revealing the etiology of hemifacial spasm and microsurgery guiding the cerebellopontine angle.