鼻内窥镜下鼻腔泪囊吻合术的有关前组筛窦应用解剖

目的：为鼻内窥下鼻腔泪囊吻合术提供解剖学指导。方法：对１６具（３２侧）成人尸头的前组筛窦解剖进行研究，同时观察了钩突与眶内仙壁的毗邻结构关系。结果：根据前组筛窦与泪囊窝的解剖关系将前组筛窦分为三种类型：Ⅰ型为前组筛房前界达泪囊窝的后泪嵴；Ⅱ型为前组筛房前界达泪窝的泪颌缝；Ⅲ型为前组筛前界超过泪凳缝达前泪嵴。其中Ⅰ型占３１．２％，Ⅱ型占５０．％，Ⅲ型占１８．８％，结论：对不同类型的鼻泪管阻塞的患者，

Applied anatomy of anterior ethmoid relevant to endoscopic transnasal dacryocystorhinostomy

OBJECTIVE: This study provided clinical guidance for the endoscopic transnasal dacryocystorhinostomy. METHOD: 16 adult cadavers were studied on the applied anatomy of between anterior ethmoid and fossa of lacrimal sac and the anatomic relationship between uncinate process and medial wall of orbit. RESULT: According to the anatomic relationship between anterior ethmoid sinus and fossa of lacrimal sac, the cells of anterior ethmoid sinus were classified into three typies, The results was that type I accounted for 31.2%, type II 50.0% type III 18.8%. CONCLUSION: CT scans should be performed to determine the anatomic relationships between fossa of lacrimal sac and anterior ethmoid and between uncinate process and medial wall of orbit before operation for patients with different typies of obstruction of nasocrimal duct, thus the proper bony opening was located during dacryocystorhinostomy.