A breech baby is positioned bottom-first or feet-first in the uterus instead of the usual head-down position. About 3 to 4% of babies are still breech at full term, though the number is much higher earlier in pregnancy: 22 to 25% of babies are breech before 28 weeks. Most flip on their own as the pregnancy progresses, but when a baby stays breech near the due date, it changes how delivery is planned.
Types of Breech Position
Not all breech presentations look the same, and the type matters because it affects both delivery risks and options. There are three main types:
- Frank breech: The baby’s bottom is down and the legs are folded straight up against the body, with feet near the head. This is the most common type.
- Complete breech: Both knees are bent so the baby is essentially sitting cross-legged, with the feet and bottom closest to the birth canal.
- Footling breech: One or both feet dangle below the bottom, pointing toward the birth canal. This type carries the highest risk of complications during delivery.
Why Some Babies Stay Breech
In many cases, there’s no clear explanation for why a baby doesn’t turn head-down. But several factors make it more likely. Having too much or too little amniotic fluid can give the baby either too much room to keep shifting or not enough room to complete the flip. A uterus with an unusual shape or noncancerous growths like fibroids can physically limit the baby’s ability to rotate. When the placenta covers all or part of the cervix (placenta previa), that can also block the baby from settling into position.
Carrying twins or multiples increases the chance of breech because there’s simply less space per baby. Premature babies are more often breech because they haven’t yet reached the stage of pregnancy when most babies naturally turn, which tends to happen between 32 and 36 weeks. Women who have been pregnant before have a slightly higher risk, possibly due to a more relaxed uterus that gives the baby more freedom of movement. Occasionally, certain birth defects prevent a baby from turning.
How Breech Position Is Detected
Your provider will typically check the baby’s position in the third trimester by pressing on your abdomen to feel where the head, back, and bottom are. This hands-on technique is called Leopold’s maneuvers, and while it’s a useful first step, it misses a significant number of breech babies. One study at a low-risk maternity clinic found that even combining abdominal palpation with a vaginal exam failed to catch all breech presentations. Of the breech deliveries in that study, 8% weren’t detected until labor had already begun.
Ultrasound is the most reliable way to confirm a baby’s position. Many practices now perform a quick ultrasound at or after 36 weeks specifically to check. In the same study, the clinic added bedside ultrasound capability after recognizing how often physical exams alone missed breech babies.
Turning the Baby Before Birth
If your baby is breech around 36 to 37 weeks, your provider may suggest a procedure called external cephalic version, or ECV. During an ECV, a doctor uses firm, guided pressure on your abdomen to manually rotate the baby into a head-down position. It’s done in a hospital setting where a cesarean can be performed quickly if needed.
The average success rate is about 58%, so it works a little more than half the time. ECV tends to be more successful in women who have given birth before, when there’s adequate amniotic fluid, and when the baby isn’t deeply wedged into the pelvis. The procedure does carry some risks, including premature rupture of membranes, placental abruption (the placenta separating from the uterine wall), preterm labor, and fetal distress. These complications are uncommon, but they’re the reason ECV is always performed where surgical delivery is immediately available.
Some women also try techniques at home like specific positioning exercises, placing ice packs near the baby’s head, or playing music low on the abdomen. These approaches are low-risk, but none have strong clinical evidence showing they reliably work.
How a Breech Baby Is Usually Delivered
Most breech babies in the United States are delivered by planned cesarean section. The reason comes down to specific risks that vaginal breech birth carries. Because the baby comes out bottom-first, the head (the largest part) is delivered last. This creates the possibility of the head becoming trapped behind a cervix that hasn’t fully dilated, a serious emergency. The umbilical cord is also more likely to slip down ahead of the baby (cord prolapse), which can cut off the baby’s oxygen supply. Research shows cord prolapse occurs in about 2.2% of breech births compared to 0.1% of head-down births, and the risk is especially high with footling breech, where it reaches 7.3%.
Breech births also carry higher rates of NICU admission, birth injury, and hospital transfer for the newborn. These risks don’t mean vaginal breech delivery is never appropriate, but they explain why cesarean has become the default.
When Vaginal Breech Birth May Be an Option
The American College of Obstetricians and Gynecologists states that a planned vaginal breech delivery “may be reasonable” when a hospital has a specific protocol in place. The typical eligibility criteria include being past 37 weeks, having a frank or complete breech presentation (not footling), an estimated baby weight between about 5.5 and 8.8 pounds, no fetal abnormalities on ultrasound, and an adequately sized pelvis. The baby’s head also needs to be tucked (flexed, not tilted back), and there should be enough amniotic fluid.
Vaginal breech delivery requires a provider with hands-on experience in this specific skill, which has become rare as cesarean rates for breech babies have climbed. If you’re interested in attempting a vaginal breech birth, the conversation starts with whether your hospital offers it and whether your baby meets all the safety criteria. Providers are required to document a detailed informed consent discussion, including the fact that the risk of serious complications for the baby is higher than with a planned cesarean.
What This Means for Your Pregnancy
Finding out your baby is breech before 36 weeks is not unusual and often resolves on its own. Between 32 and 36 weeks, around 7 to 15% of babies are still breech, and many will turn spontaneously. The timing to start making decisions is typically around 36 to 37 weeks, when your provider will confirm the baby’s position by ultrasound and discuss your options: attempting an ECV to turn the baby, scheduling a cesarean, or in select cases, planning a vaginal breech birth.
A breech position doesn’t mean something is wrong with your baby. Most breech babies are perfectly healthy. The concern is about the mechanics of delivery, not the baby’s development. If an ECV is successful, labor and delivery proceed just as they would for any head-down baby. If it isn’t, or if you choose not to try it, a planned cesarean is typically scheduled around 39 weeks. Recovery from a planned cesarean generally takes longer than a vaginal birth, with most women needing about six weeks before returning to normal activity, but outcomes for both parent and baby are well established.