Why Does Talipes Happen? What Parents Need to Know
If you've been told your baby has talipes, understanding why talipes happens is likely one of your top priorities. "Talipes" is the medical term commonly used in the UK for clubfoot (formally known as congenital talipes equinovarus, or CTEV). It's a condition where a baby's foot is turned inwards and downwards at birth, and it affects approximately 1 in 1,000 babies in the UK. This guide explains why it occurs, what the risk factors are, and what you need to know as a parent — all in plain, jargon-free language.
The most important thing to know from the outset: talipes is not your fault. Nothing you did during pregnancy caused this, and with the right treatment — the Ponseti method — the vast majority of children achieve an excellent outcome.
The Two Types of Talipes
Before we explore why talipes happens, it's essential to understand that there are two very different types, and they have different causes and outlooks:
1. Structural Talipes (True Clubfoot / CTEV)
This is true clubfoot — a structural condition where the bones, muscles, tendons, and ligaments of the foot are abnormally formed. The foot is rigid and cannot be gently moved into a normal position. This type requires treatment with the Ponseti method.
2. Positional Talipes (Postural Talipes)
This is a much milder condition where the foot appears turned but is flexible and can be easily moved into a normal position. It's caused by the baby's position in the womb and typically resolves on its own within weeks to months. It does not usually require treatment. For a full comparison, see our guide on positional talipes vs clubfoot.
The rest of this article focuses primarily on structural talipes (true clubfoot), as this is the type that raises the most questions for parents.
Why Structural Talipes Happens
The Honest Answer: We Usually Don't Know
In approximately 80% of cases, structural talipes is idiopathic — meaning it occurs without a clearly identifiable cause. Despite decades of research, scientists have not been able to pinpoint a single gene, a single environmental factor, or a single event during pregnancy that causes most cases of clubfoot.
What we do know is that it's almost certainly multifactorial — meaning it results from a combination of many small genetic and environmental factors acting together during early pregnancy. Think of it like many small pushes in the same direction that, together, push the developing foot past a threshold into an abnormal position.
When It Develops
Talipes develops during the first trimester of pregnancy (approximately weeks 8-14), when the baby's feet are forming and taking shape. By the end of the first trimester, the basic structure of the foot is established, and if talipes is going to develop, it has already done so by this point. For more detail, see when clubfoot develops in pregnancy.
Known Risk Factors
While the exact cause of most talipes is unknown, research has identified several factors that increase the risk:
Genetics and Family History
There is a clear genetic component to talipes:
- If a parent had clubfoot, the risk for their child is approximately 3-4% (30-40 times the general population risk)
- If a sibling had clubfoot, the risk is approximately 2-5%
- Identical twins have a 33% concordance rate, compared with 3% for non-identical twins
- Several genes have been identified that contribute to risk, including PITX1, TBX4, and genes involved in muscle and connective tissue development
However, most babies with talipes have no family history of the condition. It can occur in any family. Read more in our article on whether clubfoot is genetic.
Sex
Talipes is approximately twice as common in boys as in girls. The reasons for this are explored in our article on why clubfoot is more common in boys. The leading explanation is the multifactorial threshold model, which suggests boys have a lower threshold for developing the condition.
Smoking During Pregnancy
Maternal smoking has been consistently linked to an increased risk of clubfoot in research studies. The risk increase is estimated at 20-30%. Possible mechanisms include reduced blood flow to the developing limbs and direct toxic effects on developing muscles and connective tissue.
Low Amniotic Fluid (Oligohydramnios)
Reduced amniotic fluid can restrict foetal movement, potentially contributing to abnormal foot positioning. However, the vast majority of babies with talipes had normal amniotic fluid levels during pregnancy.
First Pregnancy
Some studies have found a slightly higher rate of clubfoot in first-born babies, possibly related to uterine factors. However, this association is weak and not universally confirmed.
Why Positional Talipes Happens
Positional talipes has a much simpler explanation: it's caused by the baby's position in the womb. Towards the end of pregnancy, as the baby grows larger and space becomes more limited, the feet can be pressed into an abnormal position. This is particularly common in:
- First pregnancies (where the uterine muscles are tighter)
- Breech presentations
- Multiple pregnancies (twins, triplets)
- Pregnancies with low amniotic fluid
The key difference is that in positional talipes, the underlying structure of the foot is completely normal — it's just been squashed into an odd position. Once the pressure is removed (after birth), the foot gradually returns to normal. Read more about when positional talipes should resolve.
Syndromic Talipes: When There's an Underlying Condition
In approximately 20% of cases, talipes occurs as part of a broader condition. This is called syndromic or secondary talipes. The underlying condition causes the clubfoot — and treating the clubfoot alone may not be sufficient without also addressing the underlying cause.
Common conditions associated with talipes include:
- Neurological conditions: Spina bifida, cerebral palsy, spinal muscular atrophy
- Musculoskeletal conditions: Arthrogryposis, skeletal dysplasias
- Chromosomal conditions: Trisomy 18, various microdeletion syndromes
- Other congenital conditions: Sometimes occurring alongside cleft palate or other anomalies
When talipes is diagnosed, the medical team will assess your baby for associated conditions to ensure any underlying cause is identified and managed appropriately.
What Does NOT Cause Talipes
This section is particularly important for parents who may be experiencing feelings of guilt:
- Your diet did not cause it — eating certain foods, taking normal prenatal vitamins, or following a particular diet does not cause talipes
- Exercise did not cause it — being active during pregnancy is recommended and does not cause clubfoot
- Stress did not cause it — while chronic stress during pregnancy can have effects on foetal development, there is no evidence linking everyday stress to clubfoot
- How the baby lay in the womb did not cause structural talipes — that causes positional talipes, which is different
- "Bad luck" did not cause it — it's a biological developmental variation, not a random curse
Can Talipes Be Prevented?
Currently, there is no known way to prevent structural talipes. Since the exact cause is unknown in most cases, targeted prevention isn't possible. However, general good prenatal health — including not smoking, taking folic acid supplements, and attending all antenatal appointments — is always advisable.
The UK's approach focuses on early detection and effective treatment rather than prevention. The 20-week anomaly scan can detect many cases before birth, allowing the specialist team to be ready to begin treatment promptly after delivery.
Treatment Works Exceptionally Well
Whatever the cause of your baby's talipes, the important thing to know is that treatment works. The Ponseti method — used across the NHS — has a success rate above 95% for initial correction of idiopathic clubfoot. It involves:
- Serial casting — weekly casts for 4-8 weeks (casting guide)
- Achilles tenotomy — a minor procedure needed in 80-90% of cases (tenotomy guide)
- Boots and bar — maintenance bracing until age 4-5 (boots-and-bar guide)
With proper treatment and compliance, children with talipes walk, run, play, and participate in all sports and activities without limitation. Many famous athletes were born with the condition.
Frequently Asked Questions
Q: Why does my baby have talipes when nobody in our family has had it?
A: Most babies with talipes have no family history of the condition. While genetics plays a role, it's thought to involve many genes each with a small effect. New genetic combinations in every pregnancy mean talipes can appear in any family, even without a known history. It's also possible that mild, untreated talipes went unrecognised in previous generations.
Q: Is talipes caused by something wrong with the baby's development?
A: Talipes is a variation in foot development rather than something being fundamentally "wrong." The vast majority of babies with talipes are otherwise completely healthy. The foot develops slightly differently during the first trimester, but with treatment, it can be corrected to a fully functional position.
Q: Could I have done something differently during pregnancy?
A: No. There is nothing you could have done to prevent idiopathic talipes. It develops in the first trimester, often before many women even know they're pregnant. The only modifiable risk factor with consistent evidence is smoking — but even non-smokers have babies with talipes. Please don't blame yourself.
Q: Will my next child have talipes too?
A: If you have one child with talipes, the risk for subsequent children is approximately 2-5%. This means there is a 95-98% chance your next child will not have the condition. If you have concerns, your GP can refer you for genetic counselling to discuss your family's specific risk.
Q: Does knowing why talipes happened affect the treatment?
A: The Ponseti method is the first-line treatment regardless of the cause. However, if talipes is associated with an underlying condition, the foot may be more resistant to correction and may need additional treatment. The specialist team will assess this and adjust the plan accordingly.