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目的研究儿童骨盆撞击的力学响应。方法12名2~12岁的儿童尸体由亲属捐赠用于该项实验测试,并分为两组,2~4岁(6例)为幼儿组,5~12岁(6例)为儿童组。撞击前分别进行CT扫描和X线检查,撞击后再次进行X线检查和尸检。除1例标本的撞击速度为9.1m/s外,所有标本的撞击速度均为7.5±0.5m/s。结果所有测试的时间和粘性标准(V*C)峰值曲线都非常接近,但幼儿组和儿童组的粘性标准峰值间有显著的统计学差异(P<0.05),同时两组标本的刚度也存在显著的统计学差异(P<0.05)。撞击后检查标本未发现损伤。结论儿童骨盆对每组撞击试验的反应均有良好的重复性。
Objective To study the mechanical response of children’s pelvis impact. Methods Twelve children from 2 to 12 years of age were donated from their relatives for testing. They were divided into two groups, 2 to 4 years old (6 cases), 5 to 12 years old (6 cases). Before the impact of CT scan and X-ray examination, respectively, after the impact of X-ray examination and autopsy again. Except 1 specimen, the impact velocity was 9.1 m / s, and the impact velocity of all the specimens was 7.5 ± 0.5 m / s. Results The peak curves of V * C were very close to all the test results, but there was a significant difference (P <0.05) between the viscous standard peak values in children and children. The stiffness of the two groups also existed Significant statistical difference (P <0.05). After the impact test specimens were not found damaged. Conclusion Children’s pelvis responded well to each impact test with good repeatability.