Spina Bifida Journey: From Antenatal Diagnosis to Postnatal Repair

Learning that an unborn baby has a spinal condition is one of the most difficult moments a parent can face during pregnancy. What begins as routine prenatal care can suddenly involve unfamiliar terms such as “neural tube defect.” While the diagnosis can feel overwhelming, it is a condition that thousands of families navigate each year, and with the right medical team, the outlook is often far more positive than parents initially expect.

This article outlines the complete journey of Spina Bifida, from the first signs detected on a prenatal scan through to the surgery performed after birth, along with everything parents need to understand along the way.

Understanding What Is Spina Bifida?

Spina Bifida is a congenital condition in which a baby’s spine and spinal cord fail to close completely during development in the womb. It is typically identified during a routine fetal anomaly scan, often between 18 and 20 weeks of pregnancy. The spine can be thought of as a protective tube that houses delicate nerve tissue. In a developing embryo, this tube is expected to close completely within the first month of pregnancy, often before a woman is even aware she is expecting. When this closure does not occur properly, the result is Spina Bifida, one of the most common neural tube defects affecting babies worldwide.

Once suspected, the diagnosis is confirmed through detailed imaging and, in some cases, an MRI. Certain cases may be treated with fetal surgery before birth, although most babies undergo postnatal spina bifida repair within 24 to 48 hours of delivery. With timely spina bifida surgery and continued care from an experienced pediatric neurosurgery team, many children go on to lead full and active lives.

How It Develops During Fetal Growth

Around day 28 of pregnancy, the neural tube folds and seals to form the structures that will become the brain and spinal cord. If a section fails to close, most often in the lower back, the surrounding vertebrae cannot form a complete protective ring around the spinal cord. This leaves nerve tissue exposed or inadequately protected, which is why the condition can affect movement, sensation, and bladder or bowel control later in life.

Types of Spina Bifida

The severity of the condition varies considerably. A simple breakdown is outlined below:

Type	What It Means	Severity
Spina Bifida Occulta	A small gap in the spine, often undetected	Mild, usually asymptomatic
Meningocele	A fluid-filled sac protrudes through the gap, but the spinal cord remains in place	Moderate
Myelomeningocele	The most serious form, in which the spinal cord and nerves protrude into the sac and are exposed	Severe, requires surgery

Myelomeningocele is the form of greatest clinical concern, as it carries the highest risk of nerve damage and long-term disability if left untreated.

What Causes Spina Bifida During Pregnancy?

There is no single identifiable cause. In most cases, it results from a combination of factors, including:

Low folic acid (folate) levels before and during early pregnancy
Family history of neural tube defects
Certain medications, such as some anti-seizure drugs
Maternal diabetes or obesity
A combination of genetic and environmental influences

This is precisely why folic acid supplementation is strongly recommended before conception. While it does not guarantee prevention, it significantly reduces the risk.

How Is Spina Bifida Diagnosed Before Birth (Antenatal Diagnosis)?

Advances in prenatal imaging have made early detection increasingly reliable. The antenatal diagnosis of spina bifida typically begins with a blood test, the maternal serum alpha-fetoprotein (MSAFP) screening, followed by a detailed fetal anomaly scan, usually performed between 18 and 22 weeks.

During this scan, a sonographer looks for specific indicators, including:

An open defect along the baby’s spine
The “lemon sign,” an unusual indentation in the skull shape
The “banana sign,” a curved cerebellum
Widened ventricles in the brain, which may indicate hydrocephalus

If these findings are present, a fetal MRI is often recommended to obtain a more detailed picture. This structured, step-by-step prenatal diagnosis of spina bifida gives parents and clinicians valuable time to plan appropriately, rather than being confronted with the diagnosis at delivery.

What Happens After a Prenatal Diagnosis of Spina Bifida?

Once the diagnosis is confirmed, families typically meet with a multidisciplinary team, including a fetal medicine specialist, an obstetrician, and often a pediatric neurosurgeon, for antenatal counselling. This consultation extends beyond clinical details. It addresses what the condition may mean for the child’s development, the treatment options available, and how families can prepare both practically and emotionally for the baby’s arrival.

Many parents find this stage to be the most challenging part of the journey, not necessarily because of the medical information itself, but because of the uncertainty it brings. An experienced care team will provide realistic expectations, presented clearly and without unnecessary alarm.

Can Spina Bifida Be Treated Before Birth?

In select cases, yes. Fetal surgery, in which surgeons operate on the baby while still in the womb, typically between 19 and 26 weeks, is available at a limited number of specialised centres worldwide. Research indicates it can reduce the severity of hydrocephalus and improve certain motor outcomes.

However, fetal surgery is not suitable for every case. It carries genuine risks, including preterm labour, and requires the patient to meet specific medical criteria. For most families, the more accessible and widely available approach remains postnatal spina bifida repair, performed shortly after the baby is born.

What Happens Immediately After Birth?

As soon as a baby with myelomeningocele is born, the exposed spinal tissue requires immediate protection. The delivery team will typically:

Cover the defect with a sterile, moist dressing
Position the baby carefully to avoid pressure on the affected area
Arrange an immediate neonatal and neurosurgical assessment
Prepare for surgery, usually within the first 24 to 48 hours

Timing is critical. The sooner the opening is surgically closed, the lower the risk of infection, including meningitis.

Postnatal Repair of Spina Bifida

When Is Surgery Performed?

Most babies undergo spina bifida surgery within one to two days of birth. Delaying surgery increases the risk of infection and further nerve damage, which is why it is treated as an immediate clinical priority rather than an elective procedure.

How Is the Surgery Done?

Under general anaesthesia, the pediatric neurosurgeon carefully separates the neural tissue from the surrounding skin and membrane, repositions the spinal cord within the spinal canal, and closes the surrounding layers of tissue to restore protection. Microsurgical technique and precision are essential, as the tissue involved is extremely delicate.

Goals of Surgical Repair

Seal the spinal cord from potential infection
Preserve as much existing nerve function as possible
Prevent further damage from exposure or friction
Reduce the risk of complications such as hydrocephalus

Risks and Possible Complications

As with any surgical procedure, certain risks are involved. Potential complications include:

Infection, such as meningitis
Cerebrospinal fluid leakage
Delayed wound healing
New or worsening hydrocephalus requiring a shunt

Experienced surgical teams take extensive precautions to minimise these risks, and families are advised to discuss them in detail during pre-surgical counselling.

Recovery After Spina Bifida Surgery

Recovery typically begins in the neonatal intensive care unit, where the baby is closely monitored for signs of infection, wound healing, and any changes in head circumference, which may indicate hydrocephalus. Most babies remain in hospital for one to two weeks, with a longer stay if a shunt for fluid drainage becomes necessary.

This period can be emotionally demanding for parents, involving continuous monitoring, unfamiliar medical terminology, and adjustment to the hospital environment. Families are encouraged to rely on the nursing and clinical team and to ask questions throughout the process.

Long-Term Outcomes After Spina Bifida Repair

Outcomes for children with Spina Bifida have improved considerably over recent decades. Many children attend mainstream schools, participate in adapted sports, and go on to lead independent lives. Some may require mobility aids, bladder management routines, or ongoing physiotherapy, but these needs do not define a child’s overall potential or quality of life.

Regular follow-up care remains essential and typically includes:

Monitoring of neurological development and milestones
Bladder and bowel management
Orthopaedic and mobility support
Ongoing assessment for tethered cord or shunt-related issues as the child grows

Role of Pediatric Neurosurgery Throughout the Journey

Pediatric neurosurgery involvement extends well beyond a single procedure. It represents an ongoing relationship that can span years, sometimes decades. From initial antenatal counselling through surgery, shunt management, and school-age follow-up, a dedicated pediatric neurosurgeon provides continuity of care throughout the child’s development. This sustained involvement is central to transforming a difficult diagnosis into a well-managed, supported path forward.

When Should Parents See a Pediatric Neurosurgeon?

Ideally, families should consult a pediatric neurosurgeon as soon as a fetal anomaly scan raises concern. Early involvement allows for:

Clear counselling before delivery
A coordinated birth plan with the appropriate specialists present
More efficient surgical planning after birth
Consistent, ongoing care as the child grows

FAQs

Is Spina Bifida detectable early in pregnancy?

Yes. Screening blood tests and a detailed fetal anomaly scan can identify indicators as early as the first or second trimester.

Can Spina Bifida be prevented?

Taking folic acid before and during early pregnancy significantly reduces the risk, although it does not eliminate it entirely.

Is surgery always needed after birth?

For myelomeningocele, surgery is almost always required, typically within 24 to 48 hours of delivery.

Will my child be able to walk?

This depends on the level and severity of the defect. Many children walk with or without mobility support, while others use wheelchairs. Each case is individual.

Does Spina Bifida affect intelligence?

Not typically. Most children have normal intelligence, though some may require additional learning support, particularly if hydrocephalus is also present.

How long is the hospital stay after surgery?

Typically one to two weeks, depending on healing progress and whether a shunt is required.

Can fetal surgery replace postnatal repair?

Not in all cases. Fetal surgery is an option for select pregnancies, but many babies still require postnatal follow-up or repair.

Proficiency of Dr Vishakha – Neurosurgeries Expertise

Hydrocephalus (increased fluid in the brain): The procedure involves an endoscopic third ventriculostomy and CSF diversion (VP shunt) to treat complex hydrocephalus.

Craniosynostosis (abnormal head shape due to premature cranial suture fusion) surgeries: Helmet therapy is a technique that is used in both endoscopic and open surgery.

Spinal dysraphisms(Spina Bifida)– (spinal abnormalities present by birth) – surgical repair

Encephalocele repair surgery.

Vascular conditions and stroke surgeries: revascularisation surgeries for moyamoya disease.

Pediatric brain and spine tumour surgeries.

Pediatric brain and spine infection surgeries: Endoscopic and open surgeries for brain and spine infections.

Pediatric traumatic brain and spinal injury.

Antenatal counselling for congenital fatal neurosurgical conditions.

Conclusion

A diagnosis of Spina Bifida can feel overwhelming at first, but informed guidance changes the experience considerably. From the early fetal anomaly scan to the precision required in postnatal spina bifida repair, each stage of this journey is designed to give the baby the strongest possible start. With the right specialist care, this path, while undeniably challenging, is one that families do not have to navigate alone.