基于高速荧光透视成像探究裸足与着鞋对跑步时距上和距下关节在体运动学的影响  

Effects of Barefoot and Shod on in Vivo Kinematics of the Tibiotalar and Subtalar Joint during Running Based on the High-speed Dual Fluoroscopic Imaging System

作　　者：叶东强 孙晓乐 肖松林 张希妮 张燊[1] 王少白[1] 傅维杰[1] 刘宇[1] YE Dongqiang;SUN Xiaole;XIAO Songlin;ZHANG Xini;ZHANG Shen;WANG Shaobai;FU Weijie;LIU Yu(Key Laboratory of Exercise and Health Sciences of Ministry of Education,Shanghai University of Sport,Shanghai 200438,China)

机构地区：[1]上海体育学院运动健身科技省部共建教育部重点实验室,上海200438

出　　处：《体育科学》2022年第1期59-67,共9页China Sport Science

基　　金：国家自然科学基金项目(11932013);国家重点研发计划“科技冬奥”重点专项(2019YFF0302100);上海市青年拔尖人才计划(2020);上海市“曙光学者”计划(19SG47)。

摘　　要：目的:采用国内首套高速双平面荧光透视成像系统(dual fluoroscopic imagingsystem,DFIS)独立量化裸足与着鞋跑时距上和距下关节的在体六自由度(6 degree of freedom,6DOF)运动学。方法:选取12名健康男性跑者,通过计算机断层扫描获取踝中立位影像学数据,构建踝关节模型并建立距上、距下关节局部坐标系。利用DFIS采集受试者在裸足与着鞋条件下后跟着地时(3 m/s±5%跑速)的荧光成像,并通过3D-2D图像配准技术获取距上、距下关节的6DOF运动学特征。采用配对样本t检验比较2种条件下距上和距下2个关节的6DOF参数。结果:相比裸足,着鞋跑显著降低了支撑中期距上关节的峰值跖/背屈角度与整个支撑期的屈伸活动度(P<0.05);显著增加了支撑中期距下关节的峰值背屈与峰值外翻角度(P<0.05);在整个支撑期3个平动方向(内外、前后、上下)上的运动学特征无显著性差异。结论:上述发现有效弥补了现阶段采用传统测量技术只能获取单一踝关节运动学结果的缺陷;而着鞋跑显著增加了距下关节的外翻,未来研究可进一步探究距下关节外翻与跑步损伤之间的关联;同时,着鞋对踝运动的影响在距上和距下关节处的不同则强调了采用DFIS捕捉独立关节运动的重要性。Objective:To independently quantify the in vivo degree of freedom(DOF)motion of the tibiotalar and subtalar joint under the conditions of barefoot and wearing shoes during running by using high-speed dual fluoroscopic imaging system(DFIS).Methods:Twelve healthy male runners were recruited in this study,the ankle joint model and the local coordinate system of the tibiotalar and subtalar joint was established by scaning the ankle in a neutral position.The fluoroscopic images of the foot were obtained under the condition of barefoot and wearing shoes with a heel strike pattern at a speed of 3±5%m/s,and the 6DOF motion characteristics of the tibiotalar and subtalar joint were calculated by 3D-2D registration.Paired sample t-test was used to analyze the 6DOF data of the tibiotalar and subtalar joint under these two conditions.Results:Compared with barefoot,wearing shoes decreased the peak plantar/dorsiflexion angle during mid-stance and flexion and extension range of the tibiotalar joint throughout the stance period(P<0.05),and increased the peak dorsiflexion and eversion angle of the subtalar joint during mid-stance(P<0.05).However,no difference was found in the kinematics characteristics of the three translational directions(lateral/medial,anterior/posterior,distal/proximal)during the whole stance period.Conclusion:The findings of this study effectively overcome the weakness of traditional measurement methods could only obtain the motion of the single ankle joint.As wearing shoes increased the eversion of the subtalar joint,future studies are needed to explore the association between the eversion of the subtalar joint and running related injuries.Meanwhile,the application of DFIS in quantifying the single joint motion is important because wearing shoes has different effects on the tibiotalar and subtalar joint during running.

关 键 词：双平面荧光透视成像系统 裸足 着鞋 距上关节 距下关节 在体运动学 

分 类 号：G804.63[文化科学—运动人体科学]