Detection of knee wobbling as a screen to identify athletes who may be at high risk for ACL injury.
Detection of knee wobbling as a screen to identify athletes who may be at high risk for ACL injury.
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DOI：
10.1080/23335432.2021.1936175
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发表时间：
2021-12
影响因子：
--
通讯作者：
Gamada K
中科院分区：
文献类型：
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作者：
Aoki A;Kubota S;Morinaga K;Zheng NN;Wang SS;Gamada K
本研究开发了一种方法来检测膝关节摆动（KW）在低屈曲。KW包括膝关节快速不可控的内外侧运动，无膝关节屈曲，这可能表明ACL损伤的风险。10名女运动员在进行缓慢的单腿下蹲时被记录下来。使用运动捕捉数据，计算额角速度与矢状角速度的比值（F/S）。当F/S比超过100%时，定义为“F/S尖峰”。在不同的截止频率下，对低通滤波前后的F/S峰电位进行计数。分析了KW和过滤F/S尖峰的组内相关系数。每蹲周期的KW显示中位数（范围）为3（2-8）次。在3-、6-、10-和15-Hz低通滤波前后的F/S尖峰分别为51（12-108）、2（0-6）、3（1-12）、5（2-21）和9（3-33）倍。6-Hz低通滤波运动捕捉的KW和F/S尖峰具有良好的相关性（r = 0.76）。外翻和内翻F/S棘波的中位百分比分别为71%和29%。在6 Hz低通滤波后，F/S尖峰的数量与观察到的KW强烈相关。F/S尖峰评估可用于客观检测KW，包括屈曲和内翻/外翻角速度。
This study developed a method to detect knee wobbling (KW) at low knee flexion. KW consists of quick uncontrollable medio-lateral knee movements without knee flexion, which may indicate a risk of ACL injury. Ten female athletes were recorded while performing slow, single-leg squats. Using motion capture data, the ratio of the frontal angular velocity to sagittal angular velocity (F/S) was calculated. An ‘F/S spike’ was defined when the F/S ratio exceeded 100%. The number of F/S spikes was counted before and after low-pass filtering at different cut-off frequencies. Intraclass correlation coefficients for KW and filtered F/S spike were analysed. KWs per squat cycle showed a median (range) of 3 (2–8) times. F/S spikes before and after low-pass filtering at 3-, 6-, 10-, and 15-Hz were 51 (12–108), 2 (0–6), 3 (1–12), 5 (2–21), and 9 (3–33) times, respectively. KWs and F/S spikes on motion capture with 6-Hz, low-pass filtering were well correlated (r = 0 .76). Median percentages of valgus and varus F/S spikes were 71% and 29%, respectively. After 6Hz, low-pass filtering, the number of F/S spikes was strongly correlated with observed KWs. An F/S spike assessment may be used to objectively detect KW, including flexion and varus/valgus angular velocity.