Effects of Anterior Knee Displacement During Squatting on Patellofemoral Joint Stress
Effects of Anterior Knee Displacement During Squatting on Patellofemoral Joint Stress
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DOI：
10.1123/jsr.2016-0197
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发表时间：
2018-05-01
影响因子：
1.7
通讯作者：
Torry, Michael R.
中科院分区：
文献类型：
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作者：
Kernozek, Thomas W.;Gheidi, Naghmeh;Torry, Michael R.
背景：蹲下是髌股关节疼痛综合征（PFPS）常见的康复训练。髌股关节应力（PFJS）在蹲下与更多的膝关节前移位尚未进行系统的研究。目的：使用2种技术比较蹲下期间的PFJS：蹲下时保持膝盖在脚趾后面（SBT）和蹲下时允许膝盖越过脚趾（SPT）。设置：大学研究实验室。参与者：25名健康女性（年龄：22.69（0.74）y;身高：169.39（6.44）cm;体重：61.55（9.74）kg）参与。主要结果测量：分别在180和1800 Hz下收集三维运动学和动力学数据。肌肉骨骼模型用于通过静态优化来计算肌肉力。这些肌肉力量被用于髌股关节模型，以估计PFJS。结果：与SBT技术相比，SPT期间PFJS、反作用力和股四头肌力的大小更高（P < .001）。当使用SBT技术时，膝关节屈曲、髋关节屈曲和踝关节背屈角度减小。结论：研究结果提供了一些一般性的支持，尽量减少前膝关节平移蹲在患者可能有髌股关节疼痛综合征。
Context: Squatting is a common rehabilitation training exercise for patellofemoral pain syndrome (PFPS). Patellofemoral joint stress (PFJS) during squatting with more anterior knee displacement has not been systematically investigated. Objective: To compare PFJS during squatting using 2 techniques: squat while keeping the knees behind the toes (SBT) and squat while allowing the knees to go past the toes (SPT). Setting: University research laboratory. Participants: Twenty-five healthy females (age: 22.69 (0.74) y; height: 169.39 (6.44) cm; mass: 61.55 (9.74) kg) participated. Main Outcome Measures: Three-dimensional kinematic and kinetic data were collected at 180 and 1800 Hz, respectively. A musculoskeletal model was used to calculate muscle forces through static optimization. These muscle forces were used in a patellofemoral joint model to estimate PFJS. Results: The magnitudes of PFJS, reaction force, and quadriceps force were higher (P < .001) during SPT compared with the SBT technique. Knee flexion, hip flexion, and ankle dorsiflexion angles were reduced when using the SBT technique. Conclusions: Findings provide some general support for minimizing forward knee translation during squats for patients that may have patellofemoral pain syndrome.