目的 通过解剖面动脉分支,以确定下颌骨截骨手术的安全范围,提高手术安全性。方法 取8具尸体进行双侧面动脉下颌区域的解剖,用游标卡尺测量面动脉在下颌缘穿出的位置、下颌下腺动脉起始部位与颏下动脉起始部位的距离、颏下动脉起点至下颌缘的距离。了解中国人群面动脉及其分支下颌下腺动脉、颏下动脉的走行,同时比较双侧走行的变异度。结果 面动脉从口角垂直线与下颌缘交点到下颌角连线的中外1/3处穿出,其固定分支颏下动脉在下颌缘下平均1.05 cm处穿行,颏下动脉下方平均0.95 cm处发出下颌下腺动脉。结论 摆动据的使用范围在离开下颌缘边缘1.05 cm内相对安全。

Objective To determine the safe range of mandibular osteotomy and improve the surgical safety by exploring the anatomy of the facial artery branches.Methods Eight corpses were dissected for both sides.The position where the facial artery turned out along the border of mandible,the distance between the submandibular gland artery and submental artery,the distance between the start of submental artery and the border of mandible were all measured to investigate the routines of Chinese facial artery and its branches submandibular gland artery and submental artery,and to compare the variation of bilateral routines.Results Facial artery turned out from lateral 1/3 between mandibular angle point and the intersection of the vertical line from mouth corner to the mandible border.The submental artery was turned out with an average distance of 1.05 cm below the border of mandible.The submandibular gland artery started with an average distance of 0.95 cm below the submental artery.Conclusion The reciprocate saw is relatively safe to use 1.05 cm away from the border of mandible.