骨产道又称硬产道,是骨盆构成的。它的异常可直接影响胎产式,胎先露的下降、回转及产力的改变,因此骨盆的异常在分娩活动中具有重要的位置。现就骨盆异常性的难产如何诊断与处理简述如下。一、骨盆的基本类型按其特点有下列四种: 女性骨盆,是最常见的一种,入口为椭圆形,横径较前后径大,骶岬两旁宽阔,骨盆侧壁直立,坐骨切迹较宽,坐骨棘不突出,骶骨呈孤形,骨盆浅,耻骨弓角度85～90°,女性骨盆各平面径线正常时,足月胎儿则不能发生难产,以下三型则易发生难产。男性骨盆:入口平面呈鸡心形,横径近骶岬部最 Bone production, also known as hard birth canal, is composed of the pelvis. Its anomalies can directly affect the tire production, fetal decline, rotation and changes in productivity, so the pelvic abnormalities in childbirth activity has an important position. Abnormal pelvic abnormality is how to diagnose and treatment is as follows. First, the basic types of pelvis according to their characteristics, the following four: The female pelvis, is the most common type, the entrance is oval, diameter larger than the anteroposterior diameter, sacral promontory wide on both sides of the pelvic wall upright, sciatic notch than Wide, ischial spine is not prominent, the sacrum was lonely, shallow pelvis, pubic arch angle of 85 ~ 90 °, the normal diameter of the female pelvis plane, full-term fetus can not occur dystocia, the following three types are prone to dystocia. Male pelvis: The entrance plane was heart-shaped chicken, sacral promontory most diameter