在现代产科临床实践中肩难产位于所有危险因素的首位 [1 ] ,因此对肩难产的全面认识有利于提高产科质量 ,降低母婴病率。现对肩难产的发生、处理及预测预防作一综述。一、定义及发生率肩难产传统的定义为胎头娩出后胎儿前肩嵌顿于耻骨联合上方 ,用常规助产手法不能娩出胎儿双肩 In modern obstetric practice, shoulder dystocia is at the top of all risk factors [1], so a comprehensive understanding of shoulder dystocia is conducive to improving the quality of obstetrics and reduce maternal and child disease rates. Now the occurrence of shoulder dystocia, handling and prediction of prevention are reviewed. First, the definition and incidence of shoulder dystocia The traditional definition of fetal head after the birth of the fetus incarcerated in front of the pubic symphysis above, with conventional midwifery can not be delivered fetal shoulders