筛动脉眶内段的显微解剖观察  

Microanatomic observation on intraorbital segment of ethmoidal artery

作　　者：杨有雄 廖建春[2] 陆勤康 党瑞山[4] 纪荣明[4] 刘环海[2] 

机构地区：[1]宁波市鄞州人民医院耳鼻咽喉科,宁波315040 [2]第二军医大学长征医院耳鼻咽喉-头颈外科,上海200003 [3]宁波市鄞州人民医院眼科 [4]第二军医大学解剖学教研室,上海200433

出　　处：《解剖学杂志》2007年第2期218-220,234,共4页Chinese Journal of Anatomy

基　　金：第二军医大学长征医院联合攻关项目(2004002)

摘　　要：目的:为眶内筛动脉结扎及视神经减压术提供解剖学资料。方法:在手术显微镜下解剖固定尸头标本,对筛动脉的起源、眶内走行、长度以及外径等进行观察和测量。结果:(92．8±4．7)%筛前动脉发自眼动脉O_3段、(7．2±4．7)%发自眼动脉管,穿过上斜肌与内直肌之肌间膜进入筛前孔;(44．8±9．1)%筛后动脉起自眼动脉弯、O_2段(24．1±7．8)%、O_3段(20．7±7．4)%、上斜肌肌支(6．9±4．6)%和脑膜中动脉(3．5±3．4)%,跨过上斜肌上方入筛后孔;筛中动脉出现率为(36．7±8．8)%,起自O_3段(54．5±9．1)%、眼动脉弯(27．3±8．1)%和O_2段(18．2±7．0)%。筛前动脉眶内段长度为(7．83±3．49)mm,外径为(0．80±0．24)mm;筛中动脉眶内段长度为(7．54±1．73)mm,外径为(0．42±0．13)mm;筛后动脉眶内段长度为(7．37±2．15)mm,外径为(0．46±0．18)mm。结论:筛动脉的起始及眶内走行多变异,筛后动脉变异较筛前动脉多见。Objective： To provide anatomic data for the ligation of ethmoidal artery and optic nerve decompression. Methods： Fixed cadaver specimens were dissected under operation microscope. The origin, intraorbital course of the ethmoidal arteries, length and external diameters of the intraorbital segment were observed and measured. Results： The anterior ethmoidal artery originated from the third segment of the intraorbital ophthalmic artery in （92. 8±4. 7）% and the ophthalmic artery bend in （7. 2±4. 7）%, traversing the theea between the superior oblique and medial rectus into the anterior ethmoidal foramina; while posterior ethmoidal artery originated from the ophthalmic artery bend in （44. 8 ± 9.1）% the second segment of intraorbital ophthalmic artery in （24. 1 ± 7. 8）% the third segment of intraorital ophthalmic artery in （20. 7±7.4）%, branch of superior oblique in （6.9±4. 6）% and middle meningeal artery in （3.5 ± 3.4）%, spanning the superior oblique into the posterior ethmoidal foramina. The occurrence ratio of the middle ethmoidal artery was （36.7±8.8）% and the middle ethmoidal artery originated from the third segment of the intraorbital ophthalmic artery in （54.5±9. 1）%, the ophthalmic artery bend in （27.3±8. 1）% and the second segment of the intraorbital ophthalmic artery in （18. 2±7.0）% The length of the intraorbital segment of the anterior ethmoidal arteries was （7.83±3.49）mm, with an external diameter of （0. 80±0. 24）mm; The length of the intraorbital segment of the middle ethmoidal arteries was （7.54±.73）mm, with a diameter of （0. 42±. 13）mm; The length of the intraorbital segment of the posterior ethmoidal arteries was （7.37±2.15）mm, with a diameter of （0. 46±0. 18）mm. Conclusion： The origin and intraorbital course of the ethmoidal artery is variable, which is more common in the posterior ethmoidal artery than in the anterior ethmoidal arteries.

关 键 词：筛动脉 显微解剖 

分 类 号：R322[医药卫生—人体解剖和组织胚胎学]