As the name implies, a fetus in head-down position is called a cephalic position, while a fetus in buttock-down position is called a breech position. There is no need to rush when you find a breech position in early and middle pregnancy because most fetuses will turn over on their own when they enter the second trimester. If the baby is still in breech position after 36 weeks, the chance of turning over on its own is smaller. In the past, it was possible to deliver the baby vaginally, but since there is a higher risk of posterior emergence during a breech vaginal delivery, doctors now basically recommend a cesarean section for breech deliveries. For those mothers who do not want to have a cesarean delivery, there are still ways to correct the breech position, there are always more ways than difficulties! Does the chest and knee position work? If you check the internet, you will see that many people recommend a method called chest and knee position to correct breech position. Some studies have suggested that the chest and knee position can help increase the probability that the fetus will change from breech to cephalic position, but a meta-analysis combining several randomized controlled studies concluded that there is no significant difference between doing and not doing the chest and knee position. The current attitude of most clinicians is that although there is no good evidence to support it, there is no harm in the chest and knee position, and for mothers-to-be who want to change their fetal position, they may want to give it a try between 32-36 weeks. Is it possible to try moxibustion or acupuncture points to turn the fetal position? Moxibustion or acupuncture at the Zhiyin point has been used for a long time to help turn the breech position, not only by the Chinese but also by many scholars abroad. If you look at the literature, you will find inconsistent conclusions, but most studies suggest that acupuncture or acupuncture at acupuncture points is superior to chest and knee positions in facilitating the conversion from breech to head position. Because acupuncture is simple, non-invasive, and can be done at home by mothers-to-be without adverse effects, many doctors are willing to recommend it to their patients and many mothers-to-be are happy to try it, although the level of evidence from evidence-based medicine is not yet too high. External inversion The most effective method of correction for breech position is external inversion (ECV), which involves the physician pushing the fetus continuously with two hands on the abdomen, under ultrasound supervision, to turn it into a cephalic position. The most effective way to correct ECV is to push the fetus continuously with two hands on the abdomen to turn it into head position. At this stage, the fetus is mature and there is no need to worry about the consequences of preterm birth. There are also hospitals that do not set an upper limit on the number of weeks of gestation for external reversal, even if the gestational week reaches 39-40 weeks, as long as the conditions are met, an external reversal can be attempted. For mothers with a sensitive uterus, oral contraction-suppressing drugs can be given before external inversion, and combined lumbar and rigid anesthesia has been recommended to relax the uterus and improve the success rate of external inversion. The success rate of external breech inversion reported in the literature varies relatively widely, from 30% to 80%, depending on many factors. In the hands of experienced surgeons, the success rate of external breech reversal can reach more than 70%, and the success rate of external reversal is higher in menstrual women than in primiparous women. It is best to see an experienced doctor for external reversal, as an ultrasound is required for evaluation before external reversal, and not every breech position is eligible for external reversal, as there are certain contraindications. Informed consent is also required before external inversion to inform about the risks involved, as external inversion is an operation after all.