关键词: 颈内动脉外侧间隙, 显微解剖

Abstract: Objective To study the interspace lateral to internal carotid artery, observe and measure the boundary, area and different content in the interspaces under different visual angles.Methods The anatomy of interspace via pterional approach was studied in 15 adult cadaver brains under microscope. The observation and measurement were performed under different visual angles. The outcomes were analyzed with SPSS10.0 software. Results The difference of the interspaces shape looked like triangle. The important structure had changed under different visual angles. The length of lateral side was about 4-5 mm，lateral side’[KG-*3]s change was not obvious under different visual angles（P>0.05）. But the difference of the length between the interior side and the basal side was obvious under different visual angles（P<0.05）. Conclusion The interspace lateral to internal carotid artery is often used under angle 30° whose operating space is the biggest, and often used to help operate in other interspaces successfully. The PcoA, AchA, the branches of the ICA and oculomotor nerve are very important while operating in the interspace. The PcoA and the extremity of ICA are exposed obviously under angle 30°.

Key words: interspace lateral to internal carotid artery, microanatomy