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Improved safety standards are needed to better protect younger children at playgrounds
1Division of Neuronic Engineering, Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Huddinge, 141 52, Sweden.
Insights
Current playground safety standards may not adequately protect children from traumatic brain injuries (TBIs). This study reveals that even materials meeting standards can cause dangerous brain strain, particularly in younger children.
Area of Science:
- Biomechanics
- Pediatric Traumatology
- Injury Prevention
Background:
- Playground-related traumatic brain injuries (TBIs) are a significant global concern.
- Existing safety standards for playground surfaces are based on outdated automotive industry thresholds.
- There is a critical need to re-evaluate playground safety based on child-specific injury mechanisms.
Purpose of the Study:
- To investigate head injury mechanisms in children during falls on playgrounds.
- To assess the efficacy of current playground safety standards using advanced biomechanical models.
- To provide evidence for age-dependent injury thresholds in playground testing.
Main Methods:
- Utilized a validated, age-scalable, whole-body child model.
- Simulated head-first falls from 1.59 meters onto playground surfaces.
- Analyzed head impact at front, back, and side locations.
- Evaluated brain strain and compared it against known injury thresholds.
Main Results:
- Playground materials passing current standards (HIC < 1000, linear acceleration < 200g) induced brain strain exceeding injury thresholds.
- Younger children demonstrated a higher risk of brain injury and skull fracture.
- Significant age-dependent variations in head injury risk were identified.
Conclusions:
- Current playground safety testing standards are insufficient for protecting children from TBIs.
- Novel, age-specific biomechanical data are required to develop improved playground safety standards.
- Rethinking playground material design beyond simple thickness and compliance is necessary for enhanced child protection.
Abstract:
Playground-related traumatic brain injuries (TBIs) in children remain a considerable problem world-wide and current safety standards are being questioned due to historical reasons where the injury thresholds had been perpetuated from automobile industry. Here we investigated head injury mechanisms due to falls on playgrounds using a previously developed and validated age-scalable and positionable whole body child model impacted at front, back and side of the head simulating head-first falls from 1.59 meters (m). The results show that a playground material passing the current testing standards (HIC < 1000 and resultant linear acceleration <200 g) resulted in maximum strain in the brain higher than known injury thresholds, thus not offering sufficient protection especially for younger children. The analysis highlights the age dependence of head injuries in children due to playground falls and the youngest have a higher risk of brain injury and skull fracture. Further, the results provide the first biomechanical evidence guiding age-dependent injury thresholds for playground testing standards. The results also have direct implications for novel designs of playground materials for a better protection of children from TBIs. Only making the playground material thicker and more compliant is not sufficient. This study represents the first initiative of using full body human body models of children as a new tool to improve playground testing standards and to better protect the children at playgrounds.
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