A breech baby at 35 weeks is common, and it does not lock you into any single birth plan. Somewhere around 3 to 4 percent of babies are still breech at full term, but at 35 weeks that number is higher because many have not yet made their final turn. The most effective medical intervention, called external cephalic version, is typically attempted between 36 and 38 weeks, giving your provider and your baby a window of time before any firm decisions about delivery need to be made. Understanding what influences whether the baby turns, what the procedure involves, and what your options are if the baby stays put can make the next few weeks feel far less uncertain.
How Common Is Breech at 35 Weeks, and Will the Baby Turn on Its Own?
By 35 weeks, most babies have already settled into a head-down position, but a meaningful fraction have not. Spontaneous turning from breech to head-down after 36 weeks happens in fewer than one in ten pregnancies, so while it is possible, it becomes less likely with each passing week as the baby grows and space gets tighter.1PLOS Medicine. The impact of a routine late third trimester growth scan on the incidence, diagnosis, and management of breech presentation in Oxfordshire, UK: A cohort study That is why most maternity units will confirm the baby’s position with an ultrasound around 36 weeks and begin discussing next steps if the baby is still breech.
Several factors influence the likelihood of a baby being breech at delivery. A large population-based study found that lower gestational age, lower birth weight, first pregnancies, older maternal age, a prior cesarean scar, female sex, and certain congenital differences all independently raised the odds.2PubMed. Common determinants of breech presentation at birth in singletons: a population-based study A separate analysis of over a decade of Hungarian birth data echoed those findings, adding that conditions like low amniotic fluid (oligohydramnios), a history of stillbirth or miscarriage, and pregnancies conceived through assisted reproduction were also linked to breech presentation.3PubMed. Breech presentation: its predictors and consequences. An analysis of the Hungarian Tauffer Obstetric Database (1996-2011) None of these are things you can control, but knowing about them can help you and your provider gauge how likely a spontaneous turn remains.
External Cephalic Version, the Main Medical Option
External cephalic version, usually called ECV, is the primary evidence-based way to turn a breech baby head-down. A trained provider uses their hands on your abdomen to gently encourage the baby to somersault into the correct position. It is typically done in a hospital, with ultrasound guidance and fetal heart-rate monitoring running throughout. If something goes wrong, operating rooms are nearby, though emergencies during ECV are rare.
The procedure is usually offered at 37 to 38 weeks for first-time mothers. Some centers have explored starting earlier, around 34 to 36 weeks, based on the logic that a smaller baby with more room should be easier to turn. A randomized trial did find that ECV at 35 to 36 weeks produced an immediate head-down rate of about 72 percent compared with 66 percent when done at 37 to 38 weeks, but the difference vanished by the time delivery actually happened because some early-turned babies reverted back to breech.4PubMed. Success rates of early versus late initiation of external cephalic version A large international trial confirmed this pattern: early ECV at 34 to 35 weeks increased the proportion of babies that were head-down at birth, but it did not reduce the cesarean rate and may have slightly increased the risk of preterm birth.5PubMed Central. The Early External Cephalic Version (ECV) 2 Trial: an international multicentre randomised controlled trial of timing of ECV for breech pregnancies For these reasons, most guidelines still favor attempting ECV closer to term rather than at 35 weeks.
A smaller randomized trial did suggest early ECV at 34 to 36 weeks might reduce the risk of the baby still being breech at delivery, but the authors themselves called for larger trials before changing clinical practice.6American Journal of Obstetrics & Gynecology. A randomized controlled trial of early external cephalic version at 34 to 36 weeks versus delayed external cephalic version at 37 to 38 weeks in obstetric care The upshot for you at 35 weeks: your provider will probably want to wait a couple of weeks before trying ECV, not because there is no urgency, but because the evidence suggests the later attempt leads to the same delivery outcome with a lower chance of the baby flipping back.
What Makes ECV More Likely to Work
ECV does not work every time. Across studies, overall success rates range from roughly 40 to 60 percent, with wide variation depending on who the patient is and the specifics of the pregnancy. A few factors consistently show up as predictors of success:
- Parity: Women who have given birth before tend to have more relaxed uterine and abdominal muscles, which gives the baby room to turn. One prospective study found that a parity of two gave nearly four times better odds of success compared with a first pregnancy.7International Journal of Gynecology & Obstetrics. A prospective study of the factors associated with the success rate of external cephalic version for breech presentation at term
- Non-engaged breech: If the baby’s bottom has not yet dropped deep into the pelvis, the procedure is much easier. A retrospective study found the absence of buttock engagement had an odds ratio above 24 for success.8PubMed Central. Factors Associated With the Success of External Cephalic Version for Breech Presentation: A Retrospective Study
- Easily palpable head: When the provider can clearly feel the baby’s head through the abdomen, the procedure tends to go more smoothly. This was an independent predictor in both first-time and experienced mothers in a study of over 1,200 women.9PubMed. Predictors of success of external cephalic version and cephalic presentation at birth among 1253 women with non-cephalic presentation using logistic regression and classification tree analyses
- Placental location: A placenta on the back wall of the uterus (posterior) rather than the front (anterior) appears to help. The same prospective study found a posterior placenta nearly tripled the odds of a successful turn.7International Journal of Gynecology & Obstetrics. A prospective study of the factors associated with the success rate of external cephalic version for breech presentation at term
- No cord around the neck: The absence of a nuchal cord was associated with substantially better odds of success in one study.8PubMed Central. Factors Associated With the Success of External Cephalic Version for Breech Presentation: A Retrospective Study
Your provider can assess most of these factors on ultrasound before attempting the procedure and give you a personalized estimate of how likely it is to work.
Pain Management During ECV
ECV is uncomfortable. Some women describe it as intense pressure, others as painful. One practical decision you may face is whether to have regional anesthesia, typically a spinal or epidural, during the attempt. A meta-analysis of randomized trials found that women who received anesthesia had a successful turn rate of about 58 percent compared with about 46 percent without it, and they were also more likely to deliver vaginally afterward.10PubMed Central. Effect of anesthesia on the success rate of external cephalic version: GRADE- assessed systematic review and meta-analysis of randomized controlled trials An earlier systematic review found an even wider gap, with regional anesthesia linked to roughly a 60 percent success rate versus 38 percent without it.11PubMed Central. Effect of Regional Anesthesia on the Success Rate of External Cephalic Version: A Systematic Review and Meta-Analysis
The likely reason is that anesthesia relaxes the abdominal muscles and reduces guarding, which is the involuntary tensing people do when someone pushes hard on their belly. Not every hospital routinely offers anesthesia for ECV, so it is worth asking your provider about it in advance if the procedure is on the table.
How Safe Is ECV?
The most commonly reported complication is a temporary change in the baby’s heart-rate pattern, seen in about 6 percent of attempts in one systematic review. More serious problems are uncommon: persistent heart-rate abnormalities occurred in about 0.4 percent of cases, vaginal bleeding in about 0.5 percent, and placental abruption in about 0.1 percent. Emergency cesarean sections triggered by ECV complications happened in about 0.4 percent of attempts, and perinatal mortality was about 0.2 percent.12PubMed. External cephalic version: a safe procedure? A systematic review of version-related risks French national guidelines summarize the picture this way: ECV lowers the rate of breech presentation at birth without a meaningful increase in serious maternal or fetal harm, though transient fetal heart-rate changes do occur and monitoring should continue for at least 30 minutes after the attempt.13PubMed. Breech Presentation: CNGOF Guidelines for Clinical Practice – External Cephalic Version and other Interventions to turn Breech Babies to Cephalic Presentation
For Rh-negative mothers, there is a small theoretical concern about mixing fetal and maternal blood during the manipulation. However, the risk of a clinically significant blood transfer appears to be very low, and routine testing for it after ECV is no longer recommended by most professional bodies.13PubMed. Breech Presentation: CNGOF Guidelines for Clinical Practice – External Cephalic Version and other Interventions to turn Breech Babies to Cephalic Presentation That said, if you are Rh-negative, your provider will likely still give you an anti-D injection as a precaution, which is standard practice for this stage of pregnancy anyway.
Moxibustion, Positioning, and Other Complementary Approaches
If you search for breech remedies online, you will find recommendations for everything from playing music near your pelvis to swimming handstands. The two complementary approaches with the most published research are moxibustion and maternal positioning (hands-and-knees or knee-chest posture). The evidence for both is worth understanding clearly.
Moxibustion involves burning a stick of dried mugwort near the small toe. It originates in traditional Chinese medicine and has been studied in several randomized trials. A well-known 1998 trial published in JAMA found that about 75 percent of babies in the moxibustion group were head-down at birth compared with about 62 percent in the control group.14JAMA. Moxibustion for Correction of Breech Presentation: A Randomized Controlled Trial A 2021 meta-analysis pooling multiple trials confirmed a statistically meaningful benefit, with moxibustion increasing the likelihood of a head-down presentation at birth. Interestingly, the effect appeared stronger in studies of Asian populations than in studies of non-Asian populations.15PubMed Central. Correction of Breech Presentation with Moxibustion and Acupuncture: A Systematic Review and Meta-Analysis The research is encouraging but not definitive: blinding is nearly impossible (you can smell burning mugwort), and study quality has varied. Most providers view moxibustion as a low-risk option that may help but should not replace ECV.
Maternal positioning, particularly the hands-and-knees or knee-chest posture, is widely suggested on pregnancy forums. The evidence, however, is discouraging. A Cochrane review found no difference in the rate of breech births, cesarean sections, or low Apgar scores between women who practiced postural management and those who did not.16Cochrane Database of Systematic Reviews. Cephalic version by postural management for breech presentation A separate randomized trial likewise concluded that the knee-chest posture did not increase the chance of turning, reduce breech presentation at delivery, or lower the cesarean rate.17PubMed. Knee-chest postural management for breech at term: a randomized controlled trial One small exploratory study actually found that women doing the knee-chest posture turned less often than those who did nothing, though the sample was too small to draw firm conclusions.18PubMed Central. Clinical Implications From an Exploratory Study of Postural Management of Breech Presentation Positioning exercises are harmless, but the honest summary is that the controlled trials do not support them as effective.
The Webster technique, a chiropractic adjustment, is also sometimes recommended. Published evidence for it is limited largely to case reports, not controlled trials. One case report documented a patient whose breech was not corrected by the Webster technique, with the authors noting that undiagnosed comorbidities like low amniotic fluid can complicate the picture.19PubMed Central. Breech repositioning unresponsive to Webster technique: coexistence of oligohydramnios Without randomized trials, it is impossible to say whether the Webster technique works any better than waiting and hoping the baby turns on its own.
If the Baby Stays Breech: Delivery Options
When the baby remains breech at term despite attempts to turn it, the question shifts from “how do we turn it” to “how do we deliver it safely.” For most women in most hospitals, that means a planned cesarean section. The landmark Term Breech Trial, published in 2000, found substantially better short-term outcomes for babies delivered by planned cesarean compared with planned vaginal breech birth, and it reshaped obstetric practice worldwide. A follow-up analysis eight years later confirmed that cesarean delivery had become the dominant approach in most settings.20American Journal of Obstetrics & Gynecology. The effect of the term breech trial on vaginal breech delivery 8 years on
A systematic review and meta-analysis comparing planned vaginal breech delivery with planned cesarean found that perinatal mortality risk was roughly five times higher with vaginal delivery, birth trauma risk was about four times higher, and the chance of a low Apgar score was about three times higher. On the other hand, severe maternal morbidity was lower in the vaginal delivery group.21PubMed Central. Maternal and fetal risks of planned vaginal breech delivery vs planned caesarean section for term breech birth: A systematic review and meta-analysis This trade-off, better outcomes for the baby with cesarean versus a less invasive recovery for the mother with vaginal birth, is at the heart of every conversation about breech delivery.
Vaginal breech birth is not entirely off the table, but the conditions have to be right. Typical criteria at hospitals that still offer it include a frank or incomplete breech (not a footling breech), an estimated baby weight between roughly 2,000 and 3,500 grams, no hyperextension of the baby’s neck, a singleton pregnancy at term, no previous uterine scar, and continuous electronic monitoring throughout labor. Critically, an obstetrician experienced in vaginal breech delivery must be present throughout.22PubMed Central. Is Vaginal Breech Delivery Still a Safe Option? In practice, finding a provider with that experience has become harder because fewer vaginal breech births are performed, which means fewer opportunities for training. Simulation-based training can build skills, but one study found that both junior and senior trainees showed a measurable decline in their breech delivery skills between the immediate and delayed post-training assessments, underscoring the challenge of maintaining competence in a rare procedure.
The Cost Angle
One dimension you might not think about is cost. A cost-effectiveness analysis found that when the probability of a successful ECV exceeded about 63 percent, attempting the version was both less costly and produced better health outcomes than going straight to a scheduled cesarean.23PubMed Central. Cost-effectiveness of external cephalic version for term breech presentation A more recent study from Japan showed that adopting ECV at a single center reduced the overall cesarean rate from about 27 percent to 24 percent and saved a substantial amount per successful version compared to the cost of a cesarean.24PubMed. Reducing medical costs by adopting external cephalic version in a single perinatal center in Japan If you have a choice of hospitals, asking whether they routinely offer ECV and what their success rate is can be a worthwhile question, both for your birth preferences and your wallet.
Making a Decision That Feels Right
One study tested whether a structured decision aid, essentially an interactive booklet walking women through the evidence on ECV and delivery options, could help women with breech presentation feel more confident. Women who used the decision aid reported less conflict about their choice, felt better informed, and were more satisfied with their overall pregnancy experience, without any increase in anxiety.25PubMed Central. Evaluation of a decision aid for women with breech presentation at term: a randomised controlled trial That finding suggests something practical: if your provider hands you a pamphlet or a link to a decision tool, it is worth taking the time to go through it. The biggest source of stress in breech pregnancy tends to be uncertainty, and filling informational gaps can meaningfully reduce that stress even when the clinical situation stays the same.
You also do not have to decide everything at once. At 35 weeks, you are likely looking at an ultrasound confirmation in the next week or two, a discussion about ECV, and then a delivery plan that may shift depending on how the next few weeks unfold. Asking your provider to walk you through the specific criteria they use, what they consider a good candidate for ECV, and under what conditions they would support a vaginal breech delivery versus recommending a cesarean, can transform a situation that feels like it is happening to you into one where you have genuine input.
Hip Screening After a Breech Birth
Whether the baby turns or is delivered breech, one thing to keep on your radar is hip screening. Breech position during the later weeks of pregnancy is a well-established risk factor for developmental dysplasia of the hip, a condition where the hip joint does not form properly. Up to half of infants eventually diagnosed with hip dysplasia may have normal-appearing hips at birth, because the joint continues developing in the first months of life. One study of breech-presenting infants found an overall hip dysplasia prevalence of about 7 percent when imaging was used for screening, and concluded that a physical exam alone at birth misses some cases, making a follow-up ultrasound around six weeks especially valuable for breech babies.26Paediatrics & Child Health. 63 Beyond the clinical exam: Assessing the added value of imaging in breech newborns for hip dysplasia screening In preterm breech infants specifically, one study found that those born between 32 and 37 weeks had a higher rate of positive hip findings than those born earlier, and that getting the ultrasound too early (before 40 weeks corrected age) was associated with more findings that might not reflect lasting problems.27Journal of Perinatology. Sonographic screening for developmental dysplasia of the hip in preterm breech infants: do current guidelines address the specific needs of premature infants? Most pediatricians will flag the need for a hip ultrasound at the newborn check if the baby was breech in the third trimester, but it is worth confirming this is on the plan, especially if the baby turns late and the breech history is not immediately obvious from the delivery notes.