Inclusion and exclusion criteria.

Purpose To determine the effects of Kinesio taping (KT) on the biomechanical characteristics of the lower limbs during the 90° cutting maneuver in anterior cruciate ligament (ACL) reconstruction (ACLR) athletes. Method Eighteen ACLR athletes were recruited and subjected randomly to three taping conditions, KT, placebo taping (PT), and no taping (NT), followed by a 90° cutting test. A nine-camera infrared high-speed motion capture system (Vicon, T40, 200 Hz) was used to record the kinematic parameters of the lower limbs during the cutting maneuver, and a three-dimensional dynamometer (Kistler, 1000 Hz) was used to record the kinetic parameters of the lower limbs. A one-way repeated measures analysis of variance was conducted to compare the differences in the lower limb kinematic and kinetic characteristics of ACLR athletes subjected to these interventions. Results During the landing phase, the knee valgus angle reduced significantly with KT than with NT (95% confidence interval = −1.399 to −0.154; P = 0.025), whereas no significant difference was observed between PT and NT (95% confidence interval = −1.251 to 0.217; P = 0.236). No significant differences were observed in the other kinematic variables among the three taping conditions (P > 0.05). During the landing phase, no significant differences in the kinetic variables were observed among the three taping conditions (P > 0.05). Conclusions Although KT does not improve the kinetic variables of athletes after ACLR during the 90° cutting maneuver, it reduces the knee valgus angle, which could reduce the risk of secondary ACL injury.研究目的 明确肌内效贴（Kinesio taping, KT）对前交叉韧带（anterior cruciate ligament, ACL）重建术（ACLR）运动员完成90°变向动作时下肢生物力学特征的影响。 研究方法 招募18名ACLR运动员，随机分为3组，分别接受肌内效贴贴扎、安慰剂贴扎（placebo taping, PT）与无贴扎（no taping, NT）干预，随后完成90°变向测试。采用九摄像头红外高速运动捕捉系统（Vicon T40，200 Hz）记录变向过程中下肢的运动学参数，同时使用三维测力台（Kistler，1000 Hz）采集下肢动力学参数。采用单因素重复测量方差分析，对比不同贴扎干预下ACLR运动员下肢运动学与动力学特征的差异。 研究结果 在落地阶段，肌内效贴组的膝外翻角显著低于无贴扎组（95%置信区间：−1.399 至 −0.154；P=0.025），而安慰剂贴扎组与无贴扎组无显著统计学差异（95%置信区间：−1.251 至 0.217；P=0.236）。其余运动学变量在3种贴扎条件下均无显著差异（P>0.05）。落地阶段的动力学变量在3种贴扎条件下均未观察到显著差异（P>0.05）。 研究结论 尽管肌内效贴无法改善ACLR运动员在90°变向动作中的下肢动力学参数，但可降低膝外翻角，从而降低二次前交叉韧带损伤的风险。