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目的:观测旋股外侧动脉（LFCA）升支肌骨膜髂骨支走行和分布,为应用带LFCA升支的肌骨膜髂骨瓣治疗股骨头坏死提供解剖学依据。方法:2018年5月至2019年5月,对9具尸体的18个髋部进行解剖。髋部部位以髂前上棘及耻骨联合作为坐标轴的定位点,以耻骨结节为原点,以从耻骨联合到髂前上棘的直线为x轴（以mm为单位）,以与身体矢状面平行的直线为y轴（以mm为单位）,观测LFCA升支肌骨膜髂骨支的发出点、走行、分支和外径等情况。对所得数据用SPSS 19.0进行统计学分析，n P<0.05为差异有统计学意义。n 结果:LFCA升支髂嵴支的肌骨膜髂骨支交叉点坐标为[x,（84.47±7.80） mm；y,（27.60±5.93） mm],从髂前上棘到髂嵴支分叉处距离为（2.85±0.84）（2.0~3.6） cm；骨膜髂骨支直径（0.23±0.06） mm。结论:以LFCA升支肌骨膜髂骨支支配的髂骨瓣具有手术应用价值。“,”Objective:To observe musculoperiosteal iliac branch of the ascending branch of the lateral circumflex femoral artery (LFCA), and to provide an anatomical basis for the application of musculoperiosteal iliac flap in the treatment of femoral head necrosis.Methods:From May, 2018 to May, 2019, 18 hips of 9 cadavers were dissected. A coordinate system (x, y) was designed to document the exact location of the findings: the pubic tubercle was set as the origin. A line drawn from the pubic tubercle to the anterior superior iliac spine was set as the x axis (in millimetres), and a line parallel to the sagittal plane of the body was set as the y axis (in millimetres). The location, distribution and outer diameter of the musculoperiosteal iliac flap branch of ascending branch of LFCA were investigated. SPSS 19.0 was used for statistical analysis. When n P<0.05, there was a statistical difference.n Results:The coordinates of the intersection point of the periosteal iliac branch of the iliac crest branch was [x, (84.47±7.80) mm; y,(27.60±5.93) mm]. The distance from the anterior superior iliac spine to the bifurcation of the iliac crest was (2.85±0.84)(2.0-3.6) cm. The musculoperiosteal iliac branch had an average diameter at (0.23±0.06) mm.Conclusion:Musculoperiosteal iliac flap with ascending branch of LFCA is surgical feasible and applicable.