Xie Di, Urabe Yukio, Ochiai Jyo, Kobayashi Eri, Maeda Noriaki
Department of Sports Rehabilitation, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734-8553, Japan.
Knee. 2013 Mar;20(2):85-9. doi: 10.1016/j.knee.2012.07.003. Epub 2012 Aug 3.
Many non-contact anterior cruciate ligament (ACL) injuries in female basketball players occur during sidestep cutting. The objective of this study was to identify the phases of a sidestep cutting maneuver that place athletes at a greater risk for ACL injuries.
Ten healthy female collegiate basketball athletes were asked to perform sidestep cutting movements; the knee flexion and valgus angles as well as the electromyographic activity of the vastus lateral, vastus medial, biceps femoris, and semimembranosus muscles of the non-dominant leg were analyzed during the maneuver.
The mean knee valgus angle peak tended to be greater during the stop phase than during the side-movement phase. The quadriceps activation during the stop phase was significantly higher than that during the side-movement phase. Moreover, the ratio of hamstring to quadriceps muscle activation during the stop phase was significantly lower than that during the side-movement phase, as assessed by surface electromyography.
Female basketball athletes have a higher risk for ACL injury during the stop phase than during the side-movement phase of the sidestep cutting maneuver.
Level III.
女性篮球运动员许多非接触性前交叉韧带（ACL）损伤发生在侧步切入过程中。本研究的目的是确定侧步切入动作中使运动员面临更高ACL损伤风险的阶段。
邀请10名健康的大学女子篮球运动员进行侧步切入动作；在动作过程中分析非优势腿的膝关节屈曲和外翻角度以及股外侧肌、股内侧肌、股二头肌和半膜肌的肌电图活动。
停止阶段的平均膝关节外翻角度峰值往往比侧步移动阶段更大。停止阶段股四头肌的激活明显高于侧步移动阶段。此外，通过表面肌电图评估，停止阶段腘绳肌与股四头肌的激活比率明显低于侧步移动阶段。
在侧步切入动作的停止阶段，女性篮球运动员ACL损伤的风险高于侧步移动阶段。
三级。
