床突间隙的显微和断层解剖研究及应用

A micro-sectional anatomical study of clinoid space

目的 研究床突间隙的解剖结构和毗邻关系，为颅底手术提供解剖学资料。方法 在10个甲醛溶液固定成人头颅标本上采用显微解剖观察床突间隙的解剖结构和毗邻关系，在3个国产成人尸头上利用冷冻铣切技术获得水平、冠状及矢状位0．05mm层面，在断面上连续追踪、观察床突间隙的解剖结构。结果 床突间隙是磨除前床突后形成的一个潜在的手术操作空间，床突间隙底的结构从前向后有视神经嵴、颈内动脉床突段和海绵窦前部的薄顶壁。外下壁是海绵窦外侧壁的延续，其内有动眼神经、滑车神经和眼神经等向前进入眶上裂。冷冻铣切技术获得的0．05mm层面充分显示了床突间隙的解剖特点。结论 显微和断层解剖方法相结合可以阐明床突间隙的解剖特点，为颅底手术提供详细的解剖学资料。

Objective To provide the detailed anatomic data of clinoid space for skull base surgery. Methods The anatomical structures and the adjacent structures of anterior clinoid process and clinoid space of 10 adult cadaver head specimens were observed under operating microscope. Thin slices of 0.05 mm were gotten on axial, coronal and sagittal planes from 3 of these 10 adult cadaver head specimens by freezing drilling technique. Sequential tracking was performed to observe the anatomical structure of clinoid space. Results Clinoid space is an useful space after drilling the anterior clinoid process. On the base, there is strut, clinoid portion oflCA and the anterior roof of the cavernous sinus. Cranial nerves oflII, IV, V and VI were found beside the anterior clinoid process. This sclices of 0.05 mm by freezing drilling technique could fully demonstrate the anatomical structures clinoid space. Conclusion Micro-sectional anatomical methods can demonstrate the anatomical characteristics of the clinoid space, which provides detailed anatomical data for skull base operation.