Investigation of Metatarsal Fracture for Protective Footwear Design

跖骨骨折的研究以用于防护鞋设计

• 批准号: 533149-2018
• 负责人: Chandrashekar, Naveen
• 金额: $ 1.82万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=647155
• 关键词: Investigation; Metatarsal; Fracture; Protective; Footwear

Injuries to metatarsals (top part of the foot) are common in industrial settings. Most of the injuries are due to**impact caused due to heavy weight falling on the foot, or due to foot being crushed under industrial vehicles**such as forklifts. Protective footwear are being designed to protect the metatarsals from such injury.**About 200,000 metatarsal protectors are being sold every year throughout the world and about 25% of these are**produced by Swenco, a Waterloo based company. However, the metatarsal protectors currently produced by**Swenco are designed with no information on actual protection they need to offer. Their design requirement is**purely based on ASTM standards that do not reflect the actual injury scenario. For example, it is not known**how much impact energy is needed to fracture the metatarsals. Without such information, Swenco cannot**design metatarsal protectors to offer sufficient protection. The goal of this project is to investigate the energy**needed to fracture metatarsal bones under impact and crush loading scenarios.**Sixteen fresh frozen cadaver feet will be tested; 8 in impact and 8 under quasistatic loading. A instrumented**custom test apparatus will be used to apply quasi-static compressive loading on top of cadaver foot and**minimal force needed for metatarsal fractures will be determined. Radiographs will be used to ascertain the**metatarsal fractures. A modified swing pendulum impact tester will be used to impact the feet at different**impact energies using flat bar as an indenter. Using this approach an injury risk curve that relates the risk of**metatarsal fracture to impact energy will be generated.**The information gathered from the tests will be very valuable for the industrial partner to design net generation**metatarsal protectors which are based on the experimental data. Such metatarsals are expected to be designed**for optimal metatarsal protection. This will help the company to market their product better resulting economic**benefit to Canada.

跖骨（脚的上部）受伤在工业环境中很常见。大多数伤害是由于**重物落在脚上造成的冲击，或由于脚被叉车等工业车辆**压坏而造成的。防护鞋的设计就是为了保护跖骨免受此类伤害。**全世界每年售出约 200,000 件跖骨保护器，其中约 25% **由位于滑铁卢的 Swenco 公司生产。然而，**Swenco 目前生产的跖骨保护器在设计时没有提供有关其需要提供的实际保护的信息。他们的设计要求**纯粹基于 ASTM 标准，并不反映实际的伤害情况。例如，不知道**需要多少冲击能量才能使跖骨骨折。如果没有这些信息，Swenco 就无法**设计跖骨保护器来提供足够的保护。该项目的目标是研究在冲击和挤压负载情况下跖骨骨折所需的能量**。**将测试 16 个新鲜冷冻尸体脚；冲击载荷下为 8 个，准静态载荷下为 8 个。将使用仪器**定制测试装置在尸体足部顶部施加准静态压缩载荷，并**确定跖骨骨折所需的最小力。 X光片将用于确定**跖骨骨折。改进的摆锤冲击测试仪将使用扁棒作为压头，以不同的**冲击能量对脚进行冲击。使用这种方法，将生成将**跖骨骨折风险与冲击能量联系起来的伤害风险曲线。**从测试中收集的信息对于工业合作伙伴根据实验数据设计净生成**跖骨保护器非常有价值。这种跖骨的设计**是为了提供最佳的跖骨保护。这将有助于该公司更好地营销其产品，从而为加拿大带来经济**利益。