Cheng Ye, Wang Chenyu, Yang Fan, Duan Yumei, Zhang Siwen, Wang Jincheng
From the *Department of Human Anatomy, Norman Bethune Medical School of Jilin University, Jilin; †Viterbi School of Engineering, University of Southern California, Los Angeles, CA; ‡Worker's Hospital of Yi Chun Shang Ganling District; and §Department of Orthopedics, Changchun China-Japan Union Hospital of Jilin University, Jilin, China.
J Craniofac Surg. 2013 Nov;24(6):2098-102. doi: 10.1097/SCS.0b013e31829ae3af.
The anterior clinoid process (ACP) is located close to the optic nerve, internal carotid artery, ophthalmic artery, and can be easily injured in an ACP-related surgery. An anatomical study clearly defining the ACP is of great importance. In addition, computed tomographic (CT) images may be a new tool for the anatomical analysis of ACP compared with the use of a cadaver and skull study, and more data related to ACP can be measured by CT images.
We studied the anatomical structure of ACP and the structures surrounding it to provide information to surgeons for ACP-related surgery.
Computed tomography angiographic images of 102 individuals were reviewed. The measurement was performed on coronal, sagittal, and axis planes after multiplanar reformation. The length of ACP and the distance between apex of ACP and sagittal midline were measured in the axial plane; the classification of ACP and the occurrence rate of bone bridge were also viewed in axial plane. The thickness of ACP was measured in sagittal plane.
In Chinese population, 12.3% of the ACP is gasified, and the pneumatization of ACP has a relationship with the pneumatization of sphenoid sinus. The length and thickness of ACP are similar to that in previous studies in cadaver. The apex of ACP is relatively stationary to the C3 and C4 segments of the internal carotid artery. The occurrence rate of anterior and middle clinoid bone bridge was 7.8%; the occurrence rate of anterior and posterior clinoid bone bridge was 9.3%.
The anatomical structure of ACP can be studied effectively in CT images. Recognizing the anatomical characteristics of the ACP and optic strut is important in decreasing the incidence of surgical complications of an anterior clinoidectomy and in the proper intraoperative management to prevent these complications.
前床突（ACP）靠近视神经、颈内动脉、眼动脉，在与前床突相关的手术中容易受到损伤。明确界定前床突的解剖学研究具有重要意义。此外，与尸体和颅骨研究相比，计算机断层扫描（CT）图像可能是前床突解剖分析的一种新工具，通过CT图像可以测量更多与前床突相关的数据。
我们研究前床突及其周围结构的解剖结构，为与前床突相关的手术的外科医生提供信息。
回顾了102例个体的计算机断层血管造影图像。在多平面重建后的冠状面、矢状面和轴位平面上进行测量。在轴位平面上测量前床突的长度以及前床突尖与矢状中线之间的距离；在轴位平面上还观察前床突的分类和骨桥的发生率。在矢状面测量前床突的厚度。
在中国人群中，12.3%的前床突气化，前床突的气化与蝶窦的气化有关。前床突的长度和厚度与先前尸体研究中的结果相似。前床突尖相对于颈内动脉的C3和C4段相对固定。前床突与中床突骨桥的发生率为7.8%；前床突与后床突骨桥的发生率为9.3%。
在CT图像中可以有效地研究前床突的解剖结构。认识前床突和视神经柱的解剖特征对于降低前床突切除术的手术并发症发生率以及在术中进行适当管理以预防这些并发症很重要。
