A breech presentation means a baby is positioned bottom-first or feet-first in the uterus instead of the typical head-down position. It occurs in 3% to 4% of all pregnancies that reach full term. Most babies settle into a head-down position on their own by the third trimester, but when they don’t, it changes the conversation about how delivery will happen.
Types of Breech Position
Not all breech presentations look the same, and the type matters when your provider is discussing delivery options. There are three main types:
- Frank breech: The baby’s bottom is down, and both legs are folded up with feet near the head, like a pike position. This is the most common type.
- Complete breech: The baby is sitting cross-legged, with both hips and knees bent and feet tucked near the bottom.
- Footling breech: One or both feet are pointing downward and would enter the birth canal first. This is the least common and generally carries the highest delivery risk.
Frank and complete breech are the two types most commonly considered when vaginal delivery is discussed as an option. Footling breech presents more concerns because a foot or leg entering the birth canal first increases the chance of complications like the umbilical cord slipping down ahead of the baby.
Why Some Babies Stay Breech
In many cases, there’s no single clear reason a baby remains in a breech position. But several factors make it more likely. Low amniotic fluid (oligohydramnios) is one of the strongest risk factors. With less fluid, the baby has reduced room to move, which can prevent the natural flip to head-down that most babies make between 32 and 36 weeks. Low fluid is also linked to placental problems that may further limit fetal movement.
A first pregnancy roughly doubles the odds of breech at term compared to someone who has given birth before. The uterine muscles in a first pregnancy tend to be tighter, giving the baby less space to turn. Other factors associated with breech presentation at term include maternal age of 35 or older, a placenta that sits low in the uterus (placenta previa), premature rupture of membranes, certain birth defects, maternal thyroid problems, and a smaller-than-average baby. Female babies are also slightly more likely to be breech than males.
Uterine shape abnormalities, like a heart-shaped uterus, are thought to play a role as well, though they’re harder to study in large populations.
How Breech Is Diagnosed
Your provider may first suspect a breech position during a routine prenatal visit by feeling the shape and position of the baby through your abdomen. A hard, round head near the top of the uterus and a softer, less defined shape near the pelvis are clues. Ultrasound confirms the diagnosis and identifies which type of breech it is. Most providers will check the baby’s position around 35 to 37 weeks, since babies can still turn on their own before that point.
Turning the Baby: External Cephalic Version
If your baby is still breech around 37 weeks, your provider may offer a procedure called an external cephalic version, or ECV. During this procedure, a doctor uses their hands on your abdomen to gently guide the baby into a head-down position. It’s done in a hospital setting, typically with monitoring before and after, and sometimes with medication to relax the uterine muscles.
ECV is usually attempted at 37 to 38 weeks. Doing it earlier risks the baby flipping back to breech, while waiting much longer means less room for the baby to move. Success rates vary widely depending on factors like how much amniotic fluid is present, whether it’s a first pregnancy, and the baby’s exact position. One large study at a center specializing in breech care found a success rate of about 22% when performed at 38 weeks, though other studies report higher rates at earlier gestational ages or in women who have had previous pregnancies. When ECV works, it avoids the need for a cesarean delivery in most cases.
Delivery Options for Breech Babies
The majority of breech babies in the United States and most Western countries are delivered by planned cesarean section. This became standard practice after a major international trial involving over 2,000 women across 26 countries found better short-term outcomes for babies delivered by planned cesarean compared to planned vaginal breech birth.
Vaginal breech delivery hasn’t disappeared, though. It’s still offered at some hospitals, particularly those with experienced providers. Eligibility typically depends on the type of breech (frank or complete are considered more favorable), the estimated size of the baby, and whether an experienced clinician is available for the birth. Footling breech is generally not considered safe for vaginal delivery because of the higher risk of complications.
The main concerns with vaginal breech delivery are umbilical cord prolapse, where the cord drops into the birth canal ahead of the baby and gets compressed, and head entrapment, where the body delivers but the head gets stuck. Cord prolapse occurred in about 7.5% of breech deliveries in one study, compared to roughly 1% of head-down deliveries. These risks are why the decision between vaginal breech birth and cesarean is made carefully, with the specific circumstances of each pregnancy in mind.
What to Expect If Your Baby Is Breech
Finding out your baby is breech at a routine checkup before 36 weeks is common and not a reason to worry. Many babies turn on their own in the weeks that follow. If your baby is still breech at 36 to 37 weeks, the conversation shifts to whether ECV is a good option for you and, if the baby stays breech, how you’ll deliver.
A planned cesarean for breech is typically scheduled around 39 weeks. Recovery from a cesarean takes longer than a vaginal birth, usually four to six weeks before you can return to normal activities, and future pregnancies will also factor in the history of a prior cesarean. If vaginal breech delivery is on the table, your provider will discuss the specific criteria your pregnancy needs to meet and what monitoring will look like during labor.
Some people try positioning techniques at home, like spending time on hands and knees or using specific exercises, to encourage the baby to turn. There’s limited strong evidence that these work, but they’re generally considered safe and may be worth trying before or alongside medical options.