Dewar R A, Arnold G P, Wang W, Drew T S, Abboud R J
Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, Tayside Orthopaedic Rehabilitation Technology (TORT) Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, United Kingdom; 2/2 3 Abercromby Street, Glasgow G40 2HW, United Kingdom.
Institute of Motion Analysis and Research (IMAR), Department of Orthopaedic and Trauma Surgery, Tayside Orthopaedic Rehabilitation Technology (TORT) Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee DD1 9SY, United Kingdom.
Foot (Edinb). 2019 Sep;40:34-38. doi: 10.1016/j.foot.2019.05.003. Epub 2019 May 7.
Following an ankle injury, athletes sometimes brace the injured ankle in hopes of minimizing the likelihood of suffering a recurring injury. This study aims to evaluate the effects of wearing an Ankle Stabilizing Orthosis (ASO) ankle brace unilaterally on the dominant side on bilateral ankle joint kinetics and kinematics and peroneus longus EMG activity. Since a significant proportion of ankle injuries in basketball occur during rebounding, data was collected during a simulated rebounding task. Rebounding is defined as the act of retrieving a missed shot attempt. Subjects oftentimes jump vertically to acquire the basketball as it rebounds from the backboard or rim. Sixteen subjects participated in the study (11 males, 5 females; mean age = 26.94 years, SD = 5.32; mean height 1.72 m, SD = 0.08; mean weight 73.95 kg, SD = 13.68). Participants completed the rebounding task in braced (ASO) and unbraced (UB) conditions. Ankle and foot inversion angles, ankle inversion moments and peroneus longus EMG activity were recorded and analysed to determine the effects of wearing an ankle brace unilaterally. In the dominant limb, when compared to UB, ASO reduced ankle and foot inversion, and increased ankle inversion moments. No significant differences were observed in peroneus longus EMG activity. In the non-dominant limb, no significant differences were observed for any of the parameters. These results suggest that wearing an ASO ankle brace on the dominant ankle reduces maximum ankle and foot inversion angles without posing an increased risk to the unbraced leg. However, the increased ankle inversion moments in the braced ankle suggest that there are adjustments regarding force distribution, perhaps due to the restricted range of motion.
踝关节受伤后，运动员有时会用支具固定受伤的脚踝，以期将再次受伤的可能性降至最低。本研究旨在评估单侧在优势侧佩戴踝关节稳定矫形器（ASO）对双侧踝关节动力学、运动学以及腓骨长肌肌电图活动的影响。由于篮球运动中相当一部分踝关节损伤发生在抢篮板球时，因此数据收集是在模拟抢篮板球任务过程中进行的。抢篮板球被定义为获取一次未命中投篮的行为。受试者通常会垂直起跳，以便在篮球从篮板或篮筐反弹时接住它。16名受试者参与了本研究（11名男性，5名女性；平均年龄 = 26.94岁，标准差 = 5.32；平均身高1.72米，标准差 = 0.08；平均体重73.95千克，标准差 = 13.68）。参与者在佩戴支具（ASO）和未佩戴支具（UB）的情况下完成抢篮板球任务。记录并分析踝关节和足部内翻角度、踝关节内翻力矩以及腓骨长肌肌电图活动，以确定单侧佩戴踝关节支具的影响。在优势肢体中，与未佩戴支具相比，佩戴ASO时踝关节和足部内翻减少，但踝关节内翻力矩增加。腓骨长肌肌电图活动未观察到显著差异。在非优势肢体中，任何参数均未观察到显著差异。这些结果表明，在优势脚踝上佩戴ASO踝关节支具可减小最大踝关节和足部内翻角度，且不会给未佩戴支具的腿部带来更高风险。然而，佩戴支具的脚踝处踝关节内翻力矩增加表明，可能由于运动范围受限，在力的分布方面存在调整。
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