【摘要】 目的:对颅底后外侧颅骨进行解剖学研究,为手术入路提供解剖学基础。方法:采用干颅骨及福尔马林固定头颅标本各15例进行解剖研究和模拟乙状窦后手术入路。结果:枕外隆凸到颧弓根连线为横窦标志。星点、顶乳缝前角及乳突尖形成的三角区为乙状窦上下曲之间表面投影。关键孔位置在乳窦后平台。结论:作者设计的关键孔定位方法简捷、实用、方便,在模拟手术中可行性好。更多还原

【Abstract】 Objective: To provide anatomical basis for operative approach through the anatomical study of posteriolateral cranical base. Methods:The anatomy was studied on 15 dry and 15 wet cranial bones and the retrosigmoid approach was performed. Results: The line connecting the root of the zygoma with the inion was used to locate the distal transverse sinus.The triangular area formed by asterion, mastoid tip and anterior angle of parieto mastoid suture was the surface projection of the descending portion of the sigmoid sinus. The keyhole was located on the plate of posterior mastoid. Conclusion: Because the method of locating keyhole via retrosigmoid approach is simple, practical and convenient, it is feasible to be applied on simulated operation.更多还原