AGE DEPENDENT TENSILE PROPERTIES OF CERVICAL SPINE

颈椎随年龄变化的拉伸性能

• 批准号: 6219706
• 负责人: RANDAL P CHING
• 金额: $ 7.46万
• 依托单位: UNIVERSITY OF WASHINGTON
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6219706
• 关键词: Mammalia; bioengineering /biomedical engineering; growth /development; injury; model design /development; skeletal system

Injuries sustained by children in auto crashes follow patterns that are different from those for adults. Age clearly has an effect on both the mechanisms and the tolerances of injury. A child's neck is not fully developed and is highly susceptible to dislocations and even decapitations, whereas an adult's neck is well developed and more resistant to injury. A search through the engineering and medical literature has revealed only a handful of experimental tests attempting to quantify the tolerance of the cervical spine to tensile loading. These tests were limited to a small number of quasi-static cadaver and volunteer tests, a single high-rate dynamic test, plus a few crash reconstructions using the Hybrid III dummy. In addition, there is a paucity of data on the tolerance of pediatric cervical injuries. This project is aimed at determining neck injury criteria for the pediatric spine. The aim is to determine the tensile strength of cervical spines in baboon cadaver s. W e are testing the hypothesis that younger age specimens have less strength but more ductility characteristics than adult specimens. We are also examining the failure patterns and mechanisms of injury that might occur at different ages. Therefore, the ultimate goal is to obtain age scaling laws for cervical spine tensile failure characteristics so that they may be applied in injury prevention strategies for the human pediatric population. The results should provide data for the validation of test dummies and computer models, the development of injury prevention schemes, and the evolution of better injury management and care strategies. FUNDING Grant from the National Highway Traffic Safety Administration (NHTSA) and NIH grant RR00166.

儿童在车祸中受伤的模式 与成人的不同。 年龄显然有影响 对损伤的机制和耐受性的影响。 儿童的颈部 未完全发育，极易发生位错， 甚至斩首，而成年人的脖子发育良好， 抗损伤。 通过工程和医疗部门的搜索 文献显示只有少数实验测试 试图量化颈椎对拉伸的耐受性 加载中 这些试验仅限于少数准静态试验， 尸体和志愿者测试，一个单一的高速率动态测试，加上一个 使用混合动力III假人进行了几次碰撞重建。 此外，本发明还提供了一种方法， 关于儿童宫颈癌耐受性的数据很少， 受伤 该项目旨在确定颈部损伤标准 用于小儿脊柱。 目的是确定抗拉强度 狒狒颈棘的解剖学观察。我们在验证一个假设 较年轻的样本强度较低但延展性更好 比成人标本的特征。 我们亦正研究 故障模式和可能发生的损伤机制， 不同年龄 因此，最终目标是获得年龄缩放 颈椎拉伸破坏特征的规律， 可以应用于人类儿科的损伤预防策略 人口 结果应提供数据，以验证 测试假人和计算机模型，预防伤害的发展 计划，以及更好的伤害管理和护理的发展 战略布局 国家公路交通安全基金 管理局（NHTSA）和NIH资助RR00166。