Related Experiment Video
Updated: Jan 7, 2026

07:30
A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
Published on: September 21, 2017
9.3K
Helmet Therapy for Deformational Plagiocephaly: Clinical Outcomes and Considerations
Sum-Yuet Ching1, Oscar Chun-Yiu Wong1, Wai-Wang Chau2
1Prosthetic and Orthotics Department, Prince of Wales Hospital, Hong Kong SAR, China.
Children (Basel, Switzerland)
|December 30, 2025
Summary
Helmet therapy effectively reduces skull deformity in infants with deformational plagiocephaly. Early intervention and consistent helmet use, especially during sleep, yield the best outcomes for infant head shape correction.
Area of Science:
- Pediatric Orthopedics
- Craniofacial Abnormalities
- Biomechanical Engineering
Background:
- Deformational plagiocephaly (DP) involves asymmetrical flattening of an infant's occipital skull.
- Helmet therapy aims to correct DP by guiding cranial growth.
- Existing literature shows variability in helmet therapy effectiveness due to inconsistent protocols.
Purpose of the Study:
- To evaluate the clinical outcomes of helmet therapy for infants diagnosed with deformational plagiocephaly.
- To assess the impact of treatment duration and compliance on DP correction.
Main Methods:
- Retrospective study of 30 infants (mean age 7.83 months) with DP (CVAI ≥ 5%) treated at a tertiary university hospital.
- Helmet therapy prescribed for a mean duration of 3.77 months.
- Primary outcome measured was the change in Cranial Vault Asymmetry Index (CVAI).
Main Results:
- Mean CVAI significantly decreased from 7.57% to 6.10% (p = 0.002), indicating effective skull shape correction.
- Helmet therapy effectiveness demonstrated a dose-dependent relationship, with >6 hours/day use showing greater improvement.
- Higher compliance and nighttime use correlated with better outcomes; increased sweating and mild skin redness were common, manageable side effects.
Conclusions:
- Helmet therapy is an effective treatment for infant deformational plagiocephaly when initiated early and adhered to consistently.
- Optimal results are achieved with high compliance, particularly with extended daily wear and during sleep.
- Further multi-center research with larger cohorts and extended follow-up is warranted to solidify findings.

