The Question Every Family Asks
"Will my child walk?" It is almost always the first question parents ask after a spina bifida diagnosis. The honest answer is: it depends — primarily on the level of the spinal lesion. Understanding the relationship between lesion level and motor function is the foundation of realistic expectation-setting and effective early intervention planning.
The lesion level is not a verdict — it is a starting point. Early intervention, physiotherapy, and orthopaedic management can maximise every child's potential.
Spina Bifida Types and Severity
Spina bifida encompasses a spectrum of conditions caused by incomplete neural tube closure during early pregnancy:
- Spina bifida occulta: A small gap in one or more vertebrae with no skin opening. Usually asymptomatic; walking is not affected.
- Meningocele: A sac of cerebrospinal fluid protrudes through the vertebral opening, but the spinal cord itself is not included. Many children walk with little or no assistance after surgical repair at birth.
- Myelomeningocele (MMC): The most severe form. The spinal cord protrudes through the back, causing permanent neurological damage below the lesion level. Walking prognosis depends almost entirely on this level.
Lesion Level and Walking Prognosis
In myelomeningocele, function is generally preserved above the lesion and absent or impaired below it:
- Thoracic level (T1–T12): No functional leg movement. Most children use wheelchairs for community mobility.
- High lumbar (L1–L2): Hip flexors work, but knee muscles do not. Some children walk short distances with bilateral KAFOs and forearm crutches during childhood.
- Mid-lumbar (L3): The critical threshold. L3 gives quadriceps function. Children can often walk with AFOs and forearm crutches, though some transition to wheelchairs in adolescence.
- Low lumbar (L4–L5): Most children walk independently or with AFOs. Community ambulation is realistic.
- Sacral level (S1–S3): The majority walk independently with minimal or no orthotic support.
Factors That Modify the Prognosis
Lesion level is the primary predictor, but several other factors influence walking outcome:
- Hydrocephalus and VP shunt function: Cognitive and coordination impairments from hydrocephalus affect rehabilitation capacity.
- Tethered cord syndrome: Progressive neurological decline can reduce ambulation level over time if not surgically addressed.
- Orthopaedic complications: Hip dysplasia, clubfoot, scoliosis, and leg length discrepancy are common and require active management.
- Obesity: Increasing body weight in adolescence reduces ambulatory capacity even in children who walked well when younger.
The Role of Orthopaedic Surgery
At Central Ortho & Spine, we manage the orthopaedic aspects of spina bifida as part of a multidisciplinary team. Surgical interventions that improve walking outcome include:
- Hip stabilisation procedures for hip dysplasia or dislocation
- Soft tissue releases and tendon transfers to improve gait mechanics
- Foot and ankle corrections (clubfoot repair, calcaneal osteotomy)
- Scoliosis surgery when curves compromise seating, breathing, or ambulation
- Leg lengthening for significant length discrepancies
The goal is not just structural correction — it is to maximise the child's functional mobility within the constraints of their neurological level.
Planning for International Families
Families travelling from abroad for a spina bifida consultation should bring all prior imaging (spine MRI, hip X-rays), physiotherapy assessments, and a list of current orthoses and equipment. We can typically organise a multidisciplinary assessment within a single 2-day visit, with a detailed surgical and rehabilitation plan sent to the family's local team within one week.