Microsurgical Anatomical Study of the Anterior CommunicatingArtery Complex

Objective:To investigate the anatomy structure and adjacent vessels by investigating the anterior communicating artery complex and its perforating branches under an surgery microscope,in order to,to provide anatomical datas for anterior communicating aneurysms.Method:A total of 15 adult cadaveric heads(30 cerebral hemispheres) fixed with formalin were used,red latex was injected into internal carotid artery.Anterior communicating artery complexes were dissected,detected by surgery microscope.The results were analyzed with SPSS 17.0 statistical software.The lengthes,diameters and variations of the anterior cerebral artery(ACA) A1 segment,A2 segment,anterior communicating artery(AComA),Heubner recurrent artery(HRA),perforating branches of A1 segment and AcomA were measured.Result:There were no statistically significant differences between two sides of A1 segment in length and diameter.HRA,perforating branches of A1 segment and AComA should be carefully recognized and protected during the operation on anterior communicating aneurysms.The middle 1/3 of A1 segment which had less perforating branches was the best position for temporary occlusion during the operation on anterior communicating aneurysms.It is difficult to distinguish AComA in cerebral angiography.Conclusion:The anterior communicating artery complex was regarded as the most complex.Being familiar with the anatomy of the anterior communicating artery complex and the perforating branches enabled neurosurgeons to handle the diseases in this area efficiently.