近代产科领域里,头位性难产的发生率较高,顺产与难产的界线不清,常不易作出早期诊断和及时的处理,给母子带来一定的危害。对头位性难产的研究,在国内外有过许多报导。现将我院头位性难产256例进行初步分析如下:一、发生率:在临床实践中,我们观察到,由于胎儿发育较大,头盆不称较多,宫乏力也不断增高给头位性难产带来一定的影响。我们从1979年6月—1981年12月头位分娩1,609例,其中头位性难产256例,占15.9％。二、头位性难产的类型:在256例头位 In the field of modern obstetrics, the incidence of head dystocia is high, the boundary between normal and dystocia is unclear, and it is not always easy to make early diagnosis and timely treatment, which will bring some harm to the mother and child. The research on the first sex dystocia has many reports at home and abroad. Now 256 cases of first hospital dystocia were analyzed as follows: First, the incidence: in clinical practice, we observed that due to the larger fetal development, cephalopelvic disproportion, uterine fatigue is also increasing to the head Sexual dystocia to bring a certain impact. From June 1979 to December 1981, the first delivery of 1,609 cases, of which 256 cases of head dystocia, accounting for 15.9%. Second, the type of head dystocia: 256 cases in the first bit