脑外侧裂区显微外科解剖学研究

Microsurgical anatomical study of the sylvian fissure

目的研究侧裂区及大脑中动脉、穿通动脉的解剖学特点,为临床提供解剖学资料。方法乳胶灌注的成人尸头标本10例,研究外侧裂形态、其中走行的大脑中动脉及其分支的情况,观察其变异。结果外侧裂分为大侧裂和小侧裂;18支大脑中动脉分叉部位于岛阈或岛阈远端,豆纹动脉数量从2到18支不等,平均11支;副大脑中动脉1例。结论侧裂区为一重要的自然解剖间隙,其内血管结构虽有规律,但多有变易。

Objective To study the anatomic features of sylvian fissure region,middle cerebral artery and lenticulostriate arteries（LSA）,to provide anatomic data for clinical neurosurgeon.Methods Ten color latex-perfused cadaver head specimens（twenty sides）were included in the study.The Sylvian fissure was dissected using the operating microscope to observe the its structure and blood vessels in this region.Results The Sylvian fissure was divided into large Sylvian fissure and small Sylvian fissure.In 18 cases,the bifurcation of middle cerebral artery was located at the limen insulae or distal to the limen insula.In sylvian fissure region,MCA gave off many perforating arteries and the number of perforating arteries varied from 2 to18 with an average number of 11.The perforating arteries of the MCA were divided into medial,middle,and lateral groups.Conclusions The Sylvian fissure region is an important natural anatomic gap.Although the blood vessels in this region have a regular pattern,they also have many variations.