枕后位的发生率各学者报告不同(1%—27%)。我院自1954年至1957年之735例产妇中,枕后位共22例占3%.有时因忽略了诊断只注意不能回转的枕后位,有时产妇来得晚胎儿已自然转为枕前位,以致发生率的差异很大。现就我院最近半年连续遇到的病例中,选挥5例做一简单的介绍。例1 产妇,34岁,孕三产二,预产期1957年8 The incidence of occiput posterior scholar reports vary (1% -27%). In our hospital, 735 cases of post-occipitocervical conditions were found in 735 maternal women from 1954 to 1957. Sometimes, because of the omission of diagnosis, we only pay attention to the posterior occipital posterior gyrus that can not be revolved. , So the rate of occurrence varies greatly. Now in our hospital for the past six months consecutive cases encountered, choose 5 cases to do a simple introduction. Example 1 maternal, 34-year-old, second trimester of pregnancy, expected date of 1957 8