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.

在工业环境中，对meta骨的伤害（脚的顶部）很常见。大多数伤害是由于脚上沉重的重量降低而造成的**撞击，或者是由于脚部被工业车辆压碎的**，例如叉车。保护性鞋类旨在保护meta骨免受这种伤害的侵害。**每年在全球范围内出售约200,000个MetaTarsal Protectors，其中约有25％由基于滑铁卢的公司Swenco生产。但是，** Swenco当前生产的MetaTarsal保护器设计不需要提供所需的实际保护信息。他们的设计要求纯粹是基于无法反映实际伤害情况的ASTM标准。例如，尚不清楚**破裂meta骨需要多少影响。没有这样的信息，Swenco将无法**设计metaTarsal保护器来提供足够的保护。该项目的目的是调查在撞击和压碎负载方案下断裂元骨骨骼所需的能量**。**将测试16个新鲜的冷冻尸体脚； 8撞击和8下的8。仪器**定制测试设备将用于在尸体脚上施加准静态压缩载荷，并确定meta骨骨折所需的最小力。 X光片将用于确定** meta骨骨折。修改后的挥杆摆撞击测试仪将使用扁平杆作为凹痕器在不同的**冲击能量上影响脚。使用这种方法，将产生将** meta骨断裂风险与能量产生影响的伤害风险曲线。预计将设计此类meta骨**，以实现最佳的meta骨保护。这将有助于公司更好地推销其产品，从而使经济**对加拿大受益。