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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Validation of the Microsoft Kinect as a Portable and Inexpensive Screening Tool for Identifying ACL Injury Risk
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Validation of the Microsoft Kinect as a Portable and Inexpensive Screening Tool for Identifying ACL Injury Risk

机译：验证Microsoft Kinect作为可识别ACL受伤风险的便携式廉价检查工具

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Objectives: A widespread screening tool to assess anterior cruciate ligament (ACL) injury risk should ideally be portable, inexpensive, markerless and easy to use. We hypothesize that our software program - for use with the Microsoft Kinect Motion Sensor - fulfills the above requirements. This study compares the measurements of knee abduction during a drop vertical jump (DVJ) between the Microsoft Kinect and the “gold standard” marker-based Vicon motion analysis system. Methods: Thirteen participants (10 male: 3 female; age 20-31) took part in this IRB approved study. Each participant performed between 5 and 7 DVJs, yielding a total of 84 DVJs. We simultaneously measured knee valgus motion (KVM) as measured from initial contact (IC) to the point of peak flexion (PF), frontal plane knee angle (FPKA) at both IC and PF, and knee-to-ankle separation (KASR) ratio measured at PF with the Kinect and Vicon systems. The intra-class correlation coefficient (ICC) (two-way, single measure, absolute agreement) was used to assess the degree of agreement between the Kinect and Vicon for each measure. Results: KVM had the lowest ICC value; 0.81 and 0.85 for the left and right leg, respectively. The other measures had similar ICC values of approximately 0.89 for both legs. Standard interpretations of the ICC suggest values above 0.75 indicate excellent agreement between the measurements (Table 1). Conclusion: This study demonstrates good correlation between the Microsoft Kinect and the Vicon system for measuring frontal plane knee kinematics during the DVJ. The DVJ test has been established as an ideal task for evaluating the motions that put athletes at risk for ACL injuries. Screening and early detection of ACL injury risk factors may lead to a relative risk reduction between 30% to 80% with an appropriate ACL injury prevention program. As compared to the “gold standard” Vicon system, the Microsoft Kinect is a portable, inexpensive, marker-less, and expedient system that likely has acceptable accuracy to become a practical means of mass screening of athletes for ACL injury risk factors. Further study will focus on validating the system with a larger and varied sample size and over a variety of functional tasks.
机译：目标：评估前交叉韧带（ACL）损伤风险的广泛筛查工具理想上应该是便携式，廉价，无标记且易于使用。我们假设与Microsoft Kinect运动传感器一起使用的软件程序可以满足上述要求。这项研究比较了Microsoft Kinect和基于“金标准”标记的Vicon运动分析系统之间垂直下降（DVJ）期间膝盖外展的测量结果。方法：13名参与者（10名男性：3名女性; 20-31岁）参加了该IRB批准的研究。每个参与者执行了5到7个DVJ，总共产生了84个DVJ。我们同时测量了从初次接触（IC）到最大屈曲点（PF），IC和PF的额膝膝关节角度（FPKA）以及膝到踝分离（KASR）的膝外翻运动（KVM）。 Kinect和Vicon系统在PF下测得的比率。组内相关系数（ICC）（双向，单项测量，绝对一致）用于评估每种测量的Kinect和Vicon之间的一致程度。结果：KVM的ICC值最低;左腿和右腿分别为0.81和0.85。其他测量的两条腿的ICC值相似，约为0.89。 ICC的标准解释建议值大于0.75，表明测量值之间具有极好的一致性（表1）。结论：这项研究证明了在DVJ期间Microsoft Kinect和用于测量额平面膝关节运动学的Vicon系统之间的良好相关性。 DVJ测试已被确立为评估使运动员面临ACL受伤风险的动作的理想任务。筛查和及早发现ACL损伤危险因素可以通过适当的ACL损伤预防程序使相对危险度降低30％至80％。与“金标准” Vicon系统相比，Microsoft Kinect是一种便携式，廉价，无需标记的便捷系统，其准确性可能令人满意，成为对运动员进行ACL损伤危险因素大规模筛查的实用手段。进一步的研究将集中在验证具有更大且变化的样本大小以及各种功能任务的系统上。

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