Pairot de Fontenay B, Argaud S, Blache Y, Monteil K
Centre de Recherche et d'Innovation sur le Sport, équipe Performance Motrice, Mentale et du Matériel, Université de Lyon, Université Claude Bernard Lyon 1, Villeurbanne, France.
Scand J Med Sci Sports. 2014 Dec;24(6):e471-476. doi: 10.1111/sms.12207. Epub 2014 Mar 20.
After anterior cruciate ligament reconstruction (ACL-R), many studies have reported a deficit of performance on the injured leg during multi-joint tasks. However, the total mechanical joint work (WTotal ), parameter best related to the vertical displacement of the body mass center during vertical jumping, has not yet been studied. The aim of this research was to compare asymmetries between ACL-R subjects and healthy matched subjects, through the analysis of the kinematics and kinetics during a single-leg squat jump. Asymmetries are defined by the Limb Symmetry Index (LSI). A greater LSI was observed for WTotal in the ACL-R group than in the healthy group. There was no difference in LSI for knee joint work between the two groups, while the LSI for hip and ankle joint work was significantly larger in the ACL-R group. This was explained by greater LSI for the hip and ankle joint range of motion in the ACL-R group than in the healthy group. After ACL-R, patients exhibited greater asymmetries than healthy subjects during single-leg squat jump. Physiotherapists should focus on quality execution of multi-joint movement, especially on hip and ankle joints range of motion in order to reduce asymmetries and to improve vertical jumping performance.
在前交叉韧带重建（ACL-R）术后，许多研究报告称在多关节任务中伤腿存在运动表现缺陷。然而，尚未对与垂直跳跃过程中身体重心垂直位移最相关的参数——总机械关节功（WTotal）进行研究。本研究的目的是通过分析单腿深蹲跳过程中的运动学和动力学，比较ACL-R受试者与健康匹配受试者之间的不对称性。不对称性由肢体对称指数（LSI）定义。ACL-R组的WTotal的LSI高于健康组。两组膝关节功的LSI无差异，而ACL-R组髋关节和踝关节功的LSI显著更大。这是因为ACL-R组髋关节和踝关节的运动范围的LSI高于健康组。ACL-R术后，患者在单腿深蹲跳过程中表现出比健康受试者更大的不对称性。物理治疗师应专注于多关节运动的高质量执行，尤其是髋关节和踝关节的运动范围，以减少不对称性并提高垂直跳跃表现。
