Dingenen Bart, Malfait Bart, Vanrenterghem Jos, Robinson Mark A, Verschueren Sabine M P, Staes Filip F
KU Leuven Musculoskeletal Rehabilitation Research Group, Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, Belgium, Tervuursevest 101 b1501, 3001 Leuven, Belgium.
Research Institute for Sport and Exercise Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, UK, Tom Reilly Building, Byrom Street Campus, Liverpool L3 3AF, UK.
Knee. 2015 Mar;22(2):73-9. doi: 10.1016/j.knee.2014.12.006. Epub 2014 Dec 20.
Less optimal sagittal plane movement patterns are believed to increase knee injury risk in female athletes. To facilitate clinical screening with a user-friendly method, the purpose of the present study was to examine the temporal relationships between two-dimensional measured sagittal plane kinematics and three-dimensional joint moments during the double-leg drop vertical jump (DVJ) and single-leg DVJ (SLDVJ).
Fifty injury-free female athletes were tested. Maximal excursions of hip flexion, knee flexion and ankle dorsiflexion were measured through two-dimensional video analysis. Three-dimensional motion and ground reaction forces were recorded to calculate external hip flexion, knee flexion and knee abduction moments during the entire stance phase of DVJ and SLDVJ. One-dimensional statistical parametric mapping was used to examine relationships between peak two-dimensional kinematic variables and three-dimensional moment profiles.
Hip flexion was significantly related to the hip and knee flexion moment for both tests and knee abduction moment for DVJ during the time frames corresponding with highest three-dimensional moments, while knee flexion was significantly related to the hip flexion moment during these time frames. No significant relationships were found for ankle dorsiflexion with any of the joint moments.
Two-dimensional measured sagittal plane hip flexion angles at the deepest landing position were associated with peak joint moments of the hip and knee during DVJ and SLDVJ, while the amount of knee flexion was only associated with the hip flexion moment. Assessment of knee injury risk with two-dimensional video analysis could benefit from measuring maximal hip flexion, more so than knee flexion.
矢状面运动模式欠佳被认为会增加女性运动员的膝关节损伤风险。为了采用一种用户友好的方法促进临床筛查，本研究的目的是检查在双腿下蹲垂直跳（DVJ）和单腿DVJ（SLDVJ）过程中二维测量的矢状面运动学与三维关节力矩之间的时间关系。
对50名无损伤的女性运动员进行测试。通过二维视频分析测量髋关节屈曲、膝关节屈曲和踝关节背屈的最大活动度。记录三维运动和地面反作用力，以计算DVJ和SLDVJ整个站立阶段的髋关节外展、膝关节屈曲和膝关节外展力矩。采用一维统计参数映射来检查二维运动学峰值变量与三维力矩曲线之间的关系。
在与最高三维力矩相对应的时间段内，两种测试中髋关节屈曲均与髋关节和膝关节屈曲力矩以及DVJ的膝关节外展力矩显著相关，而在这些时间段内膝关节屈曲与髋关节屈曲力矩显著相关。未发现踝关节背屈与任何关节力矩之间存在显著关系。
在DVJ和SLDVJ中，在最深着陆位置二维测量的矢状面髋关节屈曲角度与髋关节和膝关节的峰值关节力矩相关，而膝关节屈曲程度仅与髋关节屈曲力矩相关。通过二维视频分析评估膝关节损伤风险可能受益于测量最大髋关节屈曲，而不仅仅是膝关节屈曲。
