Understanding the Link Between Cerebral Palsy and the Spine
Cerebral palsy (CP) affects muscle tone, movement, and coordination, but it also impacts the
spine, particularly during growth. Muscle imbalance and weakness can gradually pull the spine
out of alignment, leading to progressive scoliosis, pelvic obliquity, and trunk imbalance.
Unlike idiopathic scoliosis, curves in CP are not driven by bone growth but by neuromuscular
imbalance; the unequal pull of spastic, weak, or uncoordinated muscles over time. These
curves often start small and flexible but can become severe, stiff, and painful if untreated.
At the Paley Orthopedic & Spine Institute, Dr. Arun Hariharan specializes in evaluating and
treating these complex spinal deformities. His focus: restoring balance, maximizing comfort, and
improving the child’s ability to sit, breathe, and participate in daily life.
Why Spinal Deformity Develops in CP
Several factors contribute to spinal curvature and imbalance:
- Muscle tone abnormalities: Spasticity or hypotonia create uneven forces on the spine.
- Poor trunk control: Weak core muscles make it difficult to maintain upright posture.
- Pelvic obliquity: The pelvis tilts, often leading to compensatory spinal curves.
- Wheelchair seating: Long-term seated posture without support accelerates deformity.
The rate and severity of curve progression often correlate with the Gross Motor Function
Classification System (GMFCS) level:
- Children at GMFCS I–II (walking independently) may develop milder, slower curves.
- Those at GMFCS IV–V (limited sitting balance) are at higher risk for rapid progression
and require closer monitoring.
Signs Families Should Watch For
Parents and caregivers should watch for:
- A visible curve or tilt of the trunk while sitting.
- One hip or shoulder higher than the other.
- Leaning to one side or trouble staying upright in a chair.
- Frequent pressure sores or skin irritation on one side.
- Increased effort or fatigue when sitting or breathing.
Early recognition allows intervention before curves become rigid or symptomatic.
Evaluation and Imaging
Dr. Hariharan’s comprehensive spine evaluation includes:
- Physical examination focusing on posture, flexibility, and pelvic balance.
- EOS imaging for low-dose, full-spine radiographs in sitting or standing position.
- MRI when neurologic changes suggest cord compression or syrinx.
- Collaboration with the child’s neurologist, rehabilitation team, and seating specialists to
form a complete care plan.
Non-Surgical Management
For mild, flexible curves:
- Seating modifications (custom molded seating, lateral supports).
- Physical therapy to strengthen trunk and improve control.
- Bracing may slow progression, though tolerance varies with muscle tone and comfort.
- Spasticity management (Botox, baclofen pumps) helps balance muscle forces.
Dr. Hariharan emphasizes that bracing and therapy should be supportive — not restrictive. The
goal is always comfort, stability, and participation in daily activities.
When Surgery Becomes Necessary
Surgery is considered when:
- Curves exceed 50–60 degrees or continue progressing despite bracing.
- The child can no longer sit comfortably or maintain posture.
- Pain, pressure sores, or respiratory compromise develop.
- Pelvic obliquity interferes with sitting balance.
Surgery aims not just to straighten the spine, but to restore stability and alignment, allowing
the child to sit comfortably and breathe more easily.
Modern Surgical Advances
Spine surgery in CP has evolved significantly, with better technology and safer anesthesia for
medically complex patients.
Dr. Hariharan employs:
- Segmental instrumentation with modern pedicle screw constructs for reliable
correction. - Navigation and neuromonitoring for accuracy and safety, especially in distorted
anatomy. - Multilevel osteotomies when needed to correct rigid curves and rebalance the pelvis.
- Bone grafting with allograft and biologics to promote fusion without excessive morbidity.
These techniques provide durable correction, reduced complications, and improved function
even in children with limited mobility.
Postoperative Care and Recovery
Recovery focuses on comfort, wound care, and gradual return to supported sitting. The Paley
team works closely with rehabilitation specialists to ensure:
- Proper wheelchair refitting and cushion adjustments.
- Early mobilization to prevent stiffness and deconditioning.Pain control protocols that minimize opioid exposure.
Most children and families report major improvements in sitting comfort, posture, and quality
of life within months of surgery.
Dr. Hariharan’s Philosophy
Dr. Arun Hariharan approaches spinal deformity in cerebral palsy with empathy and precision.
He recognizes that each child’s goals differ, from comfort and ease of care to increased
independence.
His guiding principles are:
- Safety first. Every procedure is planned with detailed imaging and multidisciplinary
input. - Function over appearance. The aim is to improve comfort, sitting balance, and quality
of life; not to achieve a perfectly straight spine. - Partnership with families. Every decision is made collaboratively, ensuring caregivers
feel informed and supported at every step.
Looking Forward
Advances in surgical technology, anesthesia, and perioperative care have transformed outcomes
for children with cerebral palsy. What once carried high risks can now be done safely, restoring
stability and dignity for families who have faced years of challenges.
Dr. Hariharan continues to contribute to national research on outcomes and quality of life in
cerebral palsy spine surgery, helping refine indications and improve results across centers.
Consultation and Contact
If your child has cerebral palsy and a spinal curvature that affects comfort, posture, or
breathing, you can learn more or schedule a consultation with Dr. Arun Hariharan at the Paley
Orthopedic & Spine Institute in West Palm Beach, Florida.