2008三医大 WJ Chen △ 1. pelvis Greater sciatic foramen x Greater sciatic foramen greater sciatic notch sacrospinous X Lesser sciatic foramen lesser sciatic notch Lesser sciatic foramen sacrotuberous lig.,后面观 前面观 sacrospinous li 172008三医大 WJ Chen 17 Greater sciatic foramen ：greater sciatic notch， sacrospinous lig. Lesser sciatic foramen： lesser sciatic notch， sacrotuberous lig.， sacrospinous lig. 后面观 前面观 Greater sciatic foramen Lesser sciatic foramen 1.pelvis