胎头以枕横位入盆(胎头矢状缝与骨盆入口横径一致)时,胎头侧屈,以前顶骨先下降,矢状缝靠近骶骨成为前不均倾位,其发生率为0.55%～0.81%。既往一旦确诊为前不均倾位,大多以剖宫产结束分娩。近1年来,我们采用屈大腿法配合徒手旋转、上翘胎头纠正前不均倾位12例。取得满意效果,现介绍如下: Fetal transverse head into the basin (fetal head sagittal and pelvic entrance diameter of the same), the fetal head flexion, before the top of the bone decreased first, the sagittal suture near the sacrum to become uneven dumping, the incidence rate of 0.55 % ~ 0.81%. Past once diagnosed as uneven before the dumping, cesarean section to the end of delivery. In the past year, we used flexion thigh method with free hand rotation, upturned fetal head to correct uneven position before 12 cases. Achieve satisfactory results, are presented below: