乙状窦后经内听道上嵴入路应用解剖学研究

Anatomic Research of Retrosigmoid Transsuprameatal Approach

对乙状窦后经内听道上嵴入路切除后颅窝生长为主的Ⅱ型岩斜脑膜瘤进行了解剖学研究 ,以期为其临床推广应用提供解剖学依据。 10 %甲醛固定的国人成人头颅湿标本 10例、漂白的颅骨干标本 10例 ,模拟手术操作并对手术涉及的重要结构测量、拍照 ;手术前后共 10例 2 0侧标本进行CT岩骨薄层扫描 ,并对重要结构进行测量。结果表明 ,乙状窦后经内听道上嵴入路涉及的重要结构有岩静脉、内听动脉、内听道上嵴等 ;重要参数包括岩尖骨质最大磨除范围的前后径、横径。提示 :乙状窦后经内听道上嵴入路通过后颅窝开颅磨除岩尖骨质 ,切除肿瘤中颅窝部分 ,适用于主体在后颅窝的Ⅱ型岩斜脑膜瘤 ,特点是操作简单、创伤小、安全性高。

It was an anatomic research on the Retrosigmoid Transsup rameatal Approach (RTA) to remove TypeⅡpetroclival meningiomas. It researched o n 10 adult cadaver heads fixed in 10% formalin and 10 dry human sku lls. 10 cadaver heads were examined by bone-window CT scanning before and after operation. Important anatomic structure and position relationship were measured and photographed. For the RTA, the important structures included petrous vei n, inner audition artery and suprameatus. The important data included the scope of the bone window. It suggests that it is the petrous apex maxim um drilling scope, through which the middle fossa part of the tumor could be rem oved. It's characterized by simplicity, security and minimal invasion.