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首页> 外文期刊>Gait & posture >Postural control capability of ACL-deficient knee after sudden tilting.
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Postural control capability of ACL-deficient knee after sudden tilting.

机译:突然倾斜后,ACL缺陷膝关节的姿势控制能力。

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摘要

Loss of neurophysiological function in an anterior cruciate ligament (ACL)-deficient knee leads to irregularities in neuromuscular coordination, and any sudden change in circumstances is believed to contribute to deterioration in postural control. The aim of this study was to investigate differences between ACL-deficient patients and healthy subjects through examination of postural control in response to perturbation. Twelve patients awaiting ACL reconstruction were compared with 12 healthy athletes. Subjects were instructed to stand on an unstable board that was then tilted suddenly from behind. The stepping power and reaction time of subjects to this perturbation were measured through accelerometers attached to both the unstable board and the subjects' knees. In healthy athletes, stepping power was stronger on the tilted side than on the opposing side, while their step reaction, as part of anticipatory postural control, was faster on the opposing side than on the tilted side. In patients with ACL-deficient knees, the opposite was true; stepping power was no stronger on the tilted side, while their step reaction was no faster on the opposing side. In terms of postural control capability, both the affected and the healthy knee of ACL-deficient patients were impaired as a result of control patterns that differed from the usual model.
机译:前交叉韧带(ACL)缺损的膝盖的神经生理功能丧失会导致神经肌肉协调性异常,并且任何情况的突然变化都将导致姿势控制的恶化。这项研究的目的是通过检查姿势控制对摄动的反应来研究ACL缺陷患者和健康受试者之间的差异。将12名等待ACL重建的患者与12名健康运动员进行比较。指示受试者站在不稳定的板上,然后突然从后面倾斜。通过连接到不稳定板和受试者膝盖上的加速度计测量受试者对这种摄动的步进能力和反应时间。在健康的运动员中,倾斜侧的踏步力量要强于相对的另一侧,而作为预期姿势控制的一部分,他们的脚步反应在相对的一侧要快于倾斜的一侧。对于ACL膝盖不足的患者,情况恰恰相反。在倾斜的一侧,步进能力不强,而在相反的一侧,其步进反应却不快。就姿势控制能力而言,ACL缺陷患者的受影响和健康膝盖均由于与常规模型不同的控制方式而受损。

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