Tadano Shigeru, Nakatsuchi Hiroki, Goto Naoko, Fujisaki Kazuhiro, Nakatsuchi Yukio
Division of Human Mechanical Systems and Design, Graduate School of Engineering, Hokkaido University, Sapporo, Japan.
Biomed Mater Eng. 2011;21(4):235-46. doi: 10.3233/BME-2011-0672.
Hip fracture in the aged easily occurs by falls and may cause these persons to become bedridden. Hip pads are effective in protecting hip fracture as they directly deflect and absorb the impact forces by falls. It is necessary for the material and the structure of hip pads to be designed to realize both high impact absorption and compliance (comfort during wearing). In this report, an impact testing system was developed to test the impact absorbing performance of hip pad with air cushions designed by the research group. The impact absorbing performance was evaluated by the impact load, collision time, and maximum load. To confirm the effectiveness in protecting against hip fracture, an impact force was applied to the greater trochanter of the human femur and the degree of fracture was measured by X-ray examination. As a result, the hip pad with air cushions had a high impact absorbing performance and was sufficiently effective to protect against hip fracture.
老年人髋部骨折很容易因跌倒而发生，可能导致这些人卧床不起。髋部护垫能有效保护髋部骨折，因为它们能直接偏转并吸收跌倒时的冲击力。髋部护垫的材料和结构必须经过设计，以实现高冲击吸收能力和贴合性（穿着时的舒适度）。在本报告中，开发了一种冲击测试系统，以测试研究小组设计的带气垫的髋部护垫的冲击吸收性能。通过冲击载荷、碰撞时间和最大载荷来评估冲击吸收性能。为了确认其预防髋部骨折的有效性，将冲击力施加到人体股骨大转子上，并通过X射线检查测量骨折程度。结果，带气垫的髋部护垫具有很高的冲击吸收性能，足以有效预防髋部骨折。
