运动捕捉摇拔戳手法治疗踝扭伤运动轨迹相关问题研究

A Study on the Related Problems of Moving Track of Ankle Sprain Treated by Shaking Drawing and Stabbing Manipulation with Motion Capture Technique

目的:探讨运动捕捉技术在踝部手法量化领域应用成功的关键点。方法:2017年6月至2018年1月从中国中医科学院望京医院骨科门诊收集30位外踝关节扭伤且无手法禁忌症的患者,男20例,女10例;年龄18~47岁,平均(27.76±6.14)岁;并选取1位临床经验丰富且手法操作娴熟的医师。前期试验按照运动捕捉系统预设的方案在医师双手及患者患踝表面粘贴Marker点,后期试验按照调整后的方案粘贴Marker点,然后通过数字运动捕捉镜头对医师向患者患踝施行摇拔戳手法操作过程进行动态拍摄,得到由运动捕捉系统保存、记录和描记的动态运动轨迹图。结果:前期试验得到的操作者双手及患者患踝运动轨迹繁多而杂乱,且轨迹存在中断,无法进行后续的数据的提取。后期试验得到的运动轨迹简洁且连续,并据此可提取出手法操作时间及最大位移数据。结论:Marker点的数量及位置的选择、Marker点粘贴的牢固性、相机的位置调整是运动捕捉技术在踝部手法量化领域应用成功的关键点。

Objective：To discuss the key points of successful application of motion capture technology in the area of ankle manipulation quantification.Methods：From June 2017 to January 2018,30 patients（20 males,10 females,aged 18～47 years,average 27.76±6.14 years）with sprained lateral ankle and no manual contraindications were collected from the orthopedic clinic of Wangjing hospital,and a doctor with rich clinical experience and skilled manual operation was selected.Prophase trials were performed by pasting Marker points on both the doctor＇s hands and the patient＇s ankle in accordance with the pre-designed program of the motion capture system,pasting Marker point according to adjusted scheme in the later trials.The operation process of the manipulation of shaking,drawing and stabbing was photographed by the digital motion capture lens,and the dynamic motion trace graphs were preserved,recorded and traced by motion capture system.Results：The motion contrail of doctor＇s hands and patient＇s ankle in the prophase trials was various,disorderly and discontinuous,so the subsequent data could not be extracted.The motion contrail obtained from the later trial was concise and continuous,and the manipulation time and the maximum displacement data could be extracted from it.Conclusion：The number and location of Marker points,the firmness of Marker points paste and the position of cameras are the key points of successful application of motion capture technology in the area of ankle manipulation quantification.