Gasca-González Oscar Octavio, Delgado-Reyes Luis, Pérez-Cruz Julio César
Laboratorio de Anatomía Microquirúrgica del Sistema Nervioso Central, Departamento de Anatomía, Facultad de Medicina, Universidad Nacional Autónoma de México, México, DF, Mexico.
Cir Cir. 2011 May-Jun;79(3):201-6, 219-24.
The recurrent artery of Heubner (RAH) is originated commonly from the anterior cerebral artery. Its extracerebral segment is directed toward the anterior perforate substance where it penetrates the cortex.
The RAH was dissected from 15 human brains from Mexican population, and the presence, length, branches, course and either RHAs or anterior communicating artery complex variants were reported.
The RAH was found in 93% of the hemispheres and duplicated in 39% of the hemispheres. The RAH was duplicated in at least a hemisphere in 46.6% of the brains; 40% of the brains had a RAH in every hemisphere. It was duplicated in every hemisphere in 20%. A single artery at a hemisphere was found in 26.6% and double at the other hemisphere. With a length between 13.6 and 36.7 mm (mean: 24.2 mm) and giving rise to 1-9 branches (mean: 3.9 branches), the RAH originated from the juxtacommunicating segment in 44% of the cases, from A2 in 41%, from A1 in 5% and as a branch of the frontopolar artery in 10%. It had an oblique course in 38%, an L in 31%, sinuous in 18% and an inverted L in 13%. In 53.3% of the brains, some variant of the anterior communicating artery complex was found.
Because of the common anatomy of the RAH and its variants, we must consider the probability of finding it duplicated; therefore, it is necessary to make minute dissections of the region to locate or to secure the absence of the RAH.
赫布纳回返动脉(RAH)通常起源于大脑前动脉。其脑外段朝向穿质前区,在此处穿透皮质。
从15例墨西哥人群的人脑标本中解剖出RAH,并报告其存在情况、长度、分支、走行以及RAH或前交通动脉复合体变异情况。
在93%的半球中发现了RAH,39%的半球中RAH为重复出现。46.6%的大脑中至少有一个半球的RAH为重复出现;40%的大脑每个半球都有一条RAH。20%的大脑每个半球的RAH均为重复出现。26.6%的大脑一个半球为单支动脉,另一个半球为双支动脉。RAH长度在13.6至36.7毫米之间(平均:24.2毫米),发出1至9支分支(平均:3.9支),44%的病例中RAH起源于近侧交通段,41%起源于A2段,5%起源于A1段,10%起源于额极动脉分支。其走行为斜行的占38%,L形的占31%,蜿蜒形的占18%,倒L形的占13%。53.3%的大脑中发现了前交通动脉复合体的某种变异。
由于RAH及其变异的常见解剖结构,我们必须考虑到发现其重复出现的可能性;因此,有必要对该区域进行细致解剖以确定RAH的位置或确保其不存在。