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Published on: September 21, 2017
Experimental cadaveric study of lateral impact of the pelvis in children
Jun Ouyang1, Qing-an Zhu, Wei-dong Zhao
1Institute of Clinical Anatomy, First Military Medical University, Guagnzhou, China. jouyang@fimmu.com
Insights
Children's pelvis response to lateral impact was repeatable across age groups. Despite varying stiffness, no injuries occurred in this pediatric cadaver study.
Area of Science:
- Biomechanics
- Pediatric Trauma
- Orthopedic Research
Background:
- Understanding pediatric pelvic biomechanics is crucial for injury prevention.
- Limited data exists on the mechanical response of children's pelvises to impact.
- Lateral impact is a common mechanism in pediatric traffic accidents.
Purpose of the Study:
- To investigate the mechanical response of pediatric cadaver pelvises to lateral impact.
- To compare the impact response between younger and older children's pelvises.
Main Methods:
- Twelve pediatric cadavers (ages 2-12) were divided into two age groups.
- Pelvic specimens underwent lateral impact testing at controlled speeds.
- CT scans, X-rays, and autopsy were used for pre- and post-impact analysis.
Main Results:
- Pelvic response showed consistent timing and peak viscous criterion (V*C) values across tests.
- Significant differences in maximum V*C and pelvic stiffness were observed between age groups (P<0.05).
- No injuries were documented in either age group following impact.
Conclusions:
- Pediatric pelvic response to lateral impact is highly repeatable within age groups.
- Age-related differences in pelvic stiffness and impact response exist.
- The pediatric pelvis demonstrates resilience to lateral impact forces within the tested parameters.
Objective:
To study the mechanic response of children's pelvis to lateral impact.
Methods:
Twelve 2-to 12 year-old children's cadavers were donated by their relatives for this impact test, dividing into younger group (2 to 4 years old, n=6) and elder group (5 to 12 years old, n=6). CT scan and X-ray examination were performed before the impact test, and after the test, X-ray examination and autopsy were conducted. All the pelvises were impacted at a speed of 7.5+/-0.5 m/s but for one at 9.1m/s.
Results:
All tests showed similar behavior of the pelvis with similar timing and peak viscous criterion (V*C) values. Statistical significance was noted in the maximum V*C and degree of stiffness of the pelvis between the 2 groups (P<0.05). No injuries occurred in the 2 groups after the impact.
Conclusion:
The pelvic test yields very repeatable pelvic response among each group tested.
