Guskiewicz K M, Perrin D H
Department of Physical Education, Exercise and Sport Science, University of North Carolina at Chapel Hill 27599-8700, USA.
J Orthop Sports Phys Ther. 1996 May;23(5):326-31. doi: 10.2519/jospt.1996.23.5.326.
Orthotic devices have been shown to successfully modify selected aspects of lower extremity mechanics and enhance foot stability during the support phase of running. It was hypothesized that orthotic intervention would relieve excessive strain on the ankle ligaments and reduce postural sway, especially in subjects with acute ankle sprains. The primary purpose of this study was to determine if orthotics would reduce postural sway in injured and uninjured subjects. Thirteen subjects with acute inversion ankle sprain and 12 uninjured subjects were assessed for postural sway on the Balance System under two treatment conditions (orthotic and nonorthotic) and four platform movements. A three-factor repeated measures analysis of variance revealed a significant group X treatment interaction, suggesting that postural sway with orthotic intervention improved significantly more in injured subjects than in uninjured subjects. A significant platform movement X treatment interaction, furthermore, revealed that postural sway for the four movement conditions was dependent upon treatment (orthotic vs. no orthotic). Tukey post hoc analysis revealed that orthotic intervention significantly reduced postural sway when the platform moved in the medial/lateral plane and inversion/eversion plane. This research suggests that custom-fit orthotics may restrict undesirable motion at the foot and ankle and enhance joint mechanoreceptors to detect perturbations and provide structural support for detecting and controlling postural sway in ankle-injured subjects.
已证明矫形器械能够成功改变下肢力学的某些选定方面，并在跑步支撑阶段增强足部稳定性。据推测，矫形干预将减轻踝关节韧带的过度劳损，并减少姿势摆动，尤其是在急性踝关节扭伤的受试者中。本研究的主要目的是确定矫形器是否会减少受伤和未受伤受试者的姿势摆动。在两种治疗条件（使用矫形器和不使用矫形器）以及四种平台运动下，对13名急性内翻踝关节扭伤的受试者和12名未受伤的受试者进行了平衡系统上的姿势摆动评估。三因素重复测量方差分析显示出显著的组×治疗交互作用，表明与未受伤受试者相比，受伤受试者在矫形干预下姿势摆动的改善更为显著。此外，显著的平台运动×治疗交互作用表明，四种运动条件下的姿势摆动取决于治疗（使用矫形器与不使用矫形器）。Tukey事后分析显示，当平台在内侧/外侧平面和内翻/外翻平面移动时，矫形干预显著减少了姿势摆动。这项研究表明，定制的矫形器可能会限制足踝部的不良运动，并增强关节机械感受器以检测扰动，并为检测和控制踝关节受伤受试者的姿势摆动提供结构支持。
