Akar Ali, Sengul Goksin, Aydin Ismail Hakki
Atatürk University, Medical School, Neurosurgery Department, Erzurum, Turkey.
Turk Neurosurg. 2009 Oct;19(4):349-52.
Increasing use of surgical magnification for operations in the territory of the anterior choroidal artery (AChA) has created a need for detailed knowledge of their anatomical variations. The aim of the present study is to examine the anatomical variations of the AChAin patients operated via pterional approach.
The origin and branching pattern of AChAs were observed intraoperatively in 130 patients who were operated via a pterional approach at our center.
AChAs arose from the internal carotid artery (ICA) and distal to the posterior communicating artery (PCoA) at a ratio of 70%, from just distal to the original point of the PCoA in 20%, and from just proximal to the ICA bifurcation in 10% of the patients. In 95 cases, AChAs arose from the inferolateral aspect of the ICA in the posterolateral aspect in 27 and from its lateral part in 8 cases. AChAs were found as a single branch at the origins from ICA in 110 patients, as double in 17 cases and as triple in 3 patients.
Recognition of anatomical variations and microvascular relationships of AChA will allow neurosurgeons to construct a better and safer microdissection plan, to save time and can prevent postoperative neurological deficits.
在脉络膜前动脉（AChA）区域手术中，手术放大技术的使用日益增加，这就需要详细了解其解剖变异情况。本研究的目的是研究经翼点入路手术患者的AChA解剖变异。
在我们中心，对130例经翼点入路手术的患者术中观察AChA的起源和分支模式。
70%的患者AChA起源于颈内动脉（ICA）且位于后交通动脉（PCoA）远端，20%起源于PCoA起始点的紧邻远端，10%起源于ICA分叉处的紧邻近端。95例中，AChA从ICA的下外侧发出，27例从ICA的后外侧发出，8例从其外侧发出。110例患者AChA从ICA发出时为单支，17例为双支，3例为三支。
认识AChA的解剖变异和微血管关系将有助于神经外科医生制定更好、更安全的显微解剖计划，节省时间并可预防术后神经功能缺损。
