目的：研究髋臼前柱切面解剖特点，为安全放置重建钢板治疗髋臼前柱骨折提供依据。方法：采用正常国人骨盆标本15具，以骨盆界线及相关骨性标志为参考予髋臼前柱切片，结合解剖标志对各切面进行观测。结果：前柱从闭孔沟到髂前上棘横切面为变化的近似三角形，此段距界线10 mm点到髋臼的切线与前柱上面的夹角由(72.6±4.8)°变小为(44.6±4.7)°，再增大为(82.4±3.2)°，髂耻隆起处切线角度最小。 结论：从闭孔沟到髂前上棘髋臼前柱应分段处理，对切面按变化的三角形处理，可帮助判断安全钉道的角度及深度。

　　Objective：To investigate geometric features of the acetabular anterior column, and provide basis for placing acetabular anterior column reconstruction plate. Methods: Fifteen adult pelvic specimens were harvested in this study. Serial cross-sections of the anterior column were performed and analyzed. Results: The shape of the transverse section of the anterior column from the obturator groove to the anterior superior iliac spine appeared as a subtriangle. The angle between the tangent line from the point about 10.0mm from the pelvic brim and the upside of the anterior column changed from (72.6±4.8)° to (44.6±4.7)°，and then enlarged to (82.4±3.2)°， however, the smallest angle neared to the iliopubic eminence. Conclusions： From the obturator groove to the anterior superior iliac spine，the thickness and the shape of the anterior column is different. Dealing the shape of transverse section as the triangle can help to judge the safe entry angle of inclination and the safe depth of the screw path.