CT three-dimensional imaging of the iliolumbar ligament and its significance on locating lumbar vertebral segments;

The morphology of the iliolumbar ligament and its biomechanical functions for anti-slip of the L_5 vertebra;

Study on the relationship between iliolumbar ligament and degenosis of different intervertebras with spondylolysis of the fifth lumbar vertebra;

Viscoelastic experiments of iliofemoral ligament and femoral head ligament;

Objective: To observe and define the anatomy of the uterosacral ligament,sacrospinous ligament with regard to adjacent anatomy, describe the distances of the major bony,vascular,neurologic to the path of the infracoccygeal sacropexy trocar , supply foundmation of the anatomy of reconstructive pelvic surgery for pelvic organ prolapse.

In the control group,sacral canal injection was practiced after loss of air pressure resistance;and in the trial group,the injection was performed after loss of air pressure resistance combined with pressure sense test on the sacro-coccygeal ligament.