筛动脉的临床应用解剖

Applied anatomy of ethmoidal artery

对60侧成人尸体眼眶内侧壁解剖,观察到筛后动脉距视神经较近,最小者仅5.1mm,额筛缝可做为寻找筛动脉的标志,大部分筛动脉(94%)都经该缝入筛房。筛前动脉一般较筛后动脉粗,但有时筛后动脉会与筛前动脉等粗(7%)或大于筛前动脉(5%)。38%的眼眶筛前、后动脉之间有一至二枝副筛动脉,其外径为0.4mm,距筛前动脉5.5mm。

The medial orbital wall was dis-sected on 60 sides of adult cadaver sp-ecimens to observe ethmoidal artery.The posterior ethmoidal artery is ne-ar the optic nerve,with a minimumdistance about 5.1mm.Most of theetmoidal arteries(94%)pierce the me-dial orbital wall through the fronto-ethmoidal suture into ethmoidal cells,and the others(6%)pass through ab-ove the suture.The anterior ethmoi-dal arteries are larger than the pos-terior ones in diameter in most spec-imens(88%),but they may be thesame(7%),or even smaller than theposterior ones(5%).One or two sm-all branches linking the anterior andposterior ethmoidal arteries were obs-erved as the accessory ethmoidal art-ery in 38% of the specimens.Theaccessory ethmoidal artery is about 0.4mm in diameter and 5.5mm to theanterior ethmoidat artery.