不同结构护踝对伞兵着陆时足外踝损伤防护的仿真研究  

Simulation Study on Effects of Different Ankle Brace on Lateral Ankle Sprain During Parachute Landing

作　　者：郭俊超[1] 王丽珍[1] 韩景芸[1] 卜伟平[2] 柳松杨[2] 樊瑜波[1,3] 

机构地区：[1]北京航空航天大学生物与医学工程学院生物力学与力生物学教育部重点实验室,北京100191 [2]空军航空医学研究所,北京100142 [3]国家康复辅具研究中心,北京100179

出　　处：《航天医学与医学工程》2015年第3期190-194,共5页Space Medicine & Medical Engineering

基　　金：国家自然科学基金(11421202,11120101001,11202017);国家自然基金委创新研究群体科学基金(11421202)

摘　　要：目的研究不同结构护踝对伞兵着陆于斜面时足外踝损伤的防护性能。方法测量伞兵着陆于20°斜面时的冲击时间和足底压力,建立完整的足-护踝结构有限元模型,模型包括护踝及足部骨骼、软骨、韧带、筋膜、软组织和皮肤,比较不同结构护踝对足外踝损伤的防护效果。结果护踝袜可有效地分布足底压力于前足外侧和跟骨区域,而护跖式护踝袜可降低腓骨29.9%的峰值应力,使跟腓和距腓前韧带的应变分别降低32.6%和32%。结论伞兵着陆于斜面时,合理选择对应的护踝结构对足外踝具有良好的防护作用。Objective To study the protection performance of different ankle braces for lateral ankle sprain dur- including bones, cartilage, ligaments, fascia, soft tissue and skin were developed in order to analyze the bio- mechanical effect of different ankle braces on lateral ankle sprain. Results Ankle sock had a significant influ- ence on the plantar pressure on the location of lateral forefoot and heel. Peak stress of fibula with protection metatarsals of ankle sock decreased 43.4% as compared with barefoot, strain of calcaneofibular ligament de- creased 32.6% , and strainanterior taJofibular ligament decreased 32%. Conclusion It is better to select the reasonable ankle brace to avoid lateral ankle sprain when landing on a slooe by the oaratroooer.

关 键 词：伞兵 着陆于斜面 有限元模型 护踝 足外踝损伤 

分 类 号：R852.21[医药卫生—航空、航天与航海医学]