AGE DEPENDENT TENSILE PROPERTIES OF CERVICAL SPINE

颈椎随年龄变化的拉伸性能

• 批准号: 6316825
• 负责人: RANDAL P CHING
• 金额: $ 5.26万
• 依托单位: UNIVERSITY OF WASHINGTON
• 依托单位国家: 美国
• 财政年份: 1976
• 资助国家: 美国
• 起止时间: 1976-06-01 至 2002-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6316825
• 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情况有以下规律 这与成人的不同。年龄显然会影响到 关于伤害的机制和耐受性。孩子的脖子 并不完全发达，极易发生位错和 甚至被斩首，而成年人的脖子发育得很好 抵抗伤害的。在工程学和医学方面的搜索 文献显示，只有少数几个实验测试 试图量化颈椎对拉伸的耐受性 正在装车。这些测试仅限于少量的准静态 身体和志愿者测试，一次高速率动态测试，外加一个 几乎没有使用混合III假人的崩溃重建。此外, 关于儿童宫颈耐受性的数据很少。 受伤。该项目旨在确定颈部损伤标准。 为儿科脊柱做准备。其目的是确定抗拉强度 我们正在检验这一假说 年龄较小的试件强度较低，但延展性较强 比成体标本更具特征。我们还在研究 可能发生在以下位置的损伤失效模式和机理 不同的年龄。因此，最终的目标是获得年龄比例 颈椎拉伸破坏特征的规律使它们 可应用于人类儿科伤害预防策略 人口。结果应为验证提供数据 测试假人和计算机模型，发展伤害预防 计划，以及更好的伤害管理和护理的演变 战略。来自国家公路交通安全局的拨款 美国国家公路交通安全管理局(NHTSA)和NIH拨款RR00166。