Yang You-Xiong, Lu Qin-Kang, Liao Jian-Chun, Dang Rui-Shan
Department of Otorhinolaryngology, The Second Yinzhou People's Hospital, Ningbo, China.
Skull Base. 2009 Sep;19(5):311-7. doi: 10.1055/s-0028-1115323.
To provide anatomical data to help identify and locate the anterior ethmoidal artery (AEA) precisely during endoscopic procedures.
We dissected 15 adult cadaver heads, which provided 30 specimens, to study morphological characteristics, courses, and several types of variations.
We found the average diameter of the AEA to be 0.80 +/- 0.24 mm. In 85.7% of the cases, the artery was seen between the second and third lamella. Other locations were over the roof of the frontal recess cells (10.7%) and the roof of the posterior ethmoid sinus (3.6%). The AEA ran parallel to the ethmoid roof and formed a slight curve. When viewed from the superior side, the angle formed by the long axis of the artery and the lamina papyracea was 60.5 degrees +/- 16.4 degrees. In 83.3% of the cases, the anterior ethmoidal canal (AEC) was identified as a separate canal, and in 16.7% the canal was embedded in the ethmoid roof. In 10 of the 30 cases (33.3%), the AEC presented some degree of dehiscence.
As a result of these dissections, we found that the AEA's course in the ethmoid roof varies. The morphological characteristics-that the AEA runs parallel to the ethmoid roof, forming a slight posterolateral to anteromedial curve as it passes from the orbit to the cribriform plate-are the most reliable factors used to identify the artery during surgery.
提供解剖学数据，以帮助在内镜手术过程中精确识别和定位筛前动脉（AEA）。
我们解剖了15个成人尸体头部，共获得30个标本，以研究其形态特征、走行及几种变异类型。
我们发现AEA的平均直径为0.80±0.24mm。在85.7%的病例中，该动脉位于第二和第三筛骨薄板之间。其他位置分别在额隐窝气房顶部（10.7%）和后筛窦顶部（3.6%）。AEA与筛骨顶平行走行并形成轻微弯曲。从上侧观察时，动脉长轴与纸样板形成的角度为60.5°±16.4°。在83.3%的病例中，筛前管（AEC）被识别为一个独立的管道，16.7%的病例中该管道嵌入筛骨顶内。在30例中的10例（33.3%）中，AEC存在一定程度的骨质缺损。
通过这些解剖，我们发现AEA在筛骨顶的走行存在变异。其形态特征——AEA与筛骨顶平行走行，从眶部至筛板时形成从后外侧到前内侧的轻微弯曲——是手术中识别该动脉最可靠的因素。
