1.Radiographic pelvimetry is of limited value in managing most cephalic presentations.

1.大多数头先露时放射盆有限。

2.Objective:To survey the normal values of pelvic inclination of external pelvimetry and to provide evidence so as to estimate dystocia risk index for antenatal care.

2.盆倾斜度正常,为产前检查估计难产风险指数提供依据。