The mechanism by which amniotomy speeds up labour remains unclear it is thought that when the membranes are ruptured ,the production and release of prostaglandins and oxytocin increases resulting in stronger contractions and quicker cervical dilatation. I has been found that early intervention (augmentation versus routine care ) with amniotomy and oxytocin to be associated with a modest reduction in the risk of caesarean section. Moreover, amniotomy found to be associated with an increased risk of cesarean delivery compared with women without amniotomy for shortening of spontaneous labour.