与标准被动支具相比，自适应膝关节支具在ACL缺陷男性功能性跳跃任务中表现出更好的动态稳定效果
简介
在12名ACL缺陷男性（伤后32±6个月）中，采用三维运动捕捉的受试者内比较，评估自适应动态支具（ADB）与标准被动支具在单腿落地跳、交叉跳和90°旋转跳中的动态膝稳定效果。两种支具间膝屈曲角无显著差异；ADB在落地跳中显著降低膝外翻角，在交叉跳中显著降低膝外翻和旋转角，而在旋转跳中膝外翻和旋转角仅见显著的支具×时间交互。ADB可能通过改善功能活动中的动态膝…
英文摘要
PURPOSE: To compare the dynamic knee stabilization effects of an adaptive dynamic brace (ADB) with those of a standard passive brace in anterior cruciate ligament (ACL)-deficient men. METHODS: ACL-deficient participants were included. The subjects performed 3 single-leg functional hop tests: drop jump, crossover hop, and 90° rotational hop. Each task was performed once while wearing the ADB and once while wearing a traditional passive brace. Three-dimensional kinematic data were collected using an 8-camera optoelectronic motion-capture system. Repeated-measures analysis of variance was used to evaluate the effects of brace condition and time. An a priori power analysis indicated that a minimum of 12 participants were required. RESULTS: Twelve ACL-deficient participants were included (age: 30.2 ± 3.4 years; time since injury: 32 ± 6 months; ACL-Return to Sport after Injury score: 70 ± 3). No significant differences in knee flexion angles were observed between braces. Knee flexion during landing was significantly lower in the crossover hop compared with the drop jump and rotational hop tasks (P < .01). During the drop jump task, the ADB significantly reduced knee valgus angles (P < .01). In the crossover hop task, the ADB significantly reduced both knee valgus and rotational angles (P < .01). During the rotational hop task, a significant brace-by-time interaction was observed for knee valgus (P < .05) and rotational angles (P < .05). CONCLUSIONS: The ADB showed improved dynamic stabilization particularly during high-risk landing and rotational movement compared with a standard passive brace. CLINICAL RELEVANCE: The ADB may enhance the effectiveness of rehabilitation strategies in ACL-deficient individuals by improving dynamic knee stability during functional activities.