Assessing postural stability in flatfoot using a time-in-boundary method during single-leg standing.

IF 2.1 3区 医学 Q2 ORTHOPEDICS
Paul S Sung, Dongchul Lee
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Abstract

Flatfoot, a foot deformity characterized by the collapse of the arch, significantly impacts an individual's balance and stability. This study explored postural adjustments and sway excursions in individuals with and without flatfoot using the Time-in-Boundary method. This method assessed relative stability by exploring various center of pressure radius thresholds during three trials of single-leg stance. We observed significant interactions in threshold levels (F = 4.37, p = 0.04) and normalized relative stable times (F = 7.64, p = 0.01), particularly in the initial trials. Initially, the flatfoot group showed marked decreases in stable times at 10 mm, 15 mm, and 20 mm thresholds, which expanded to 25 mm and 30 mm in subsequent trials. Despite a significant decrease in stability at the 30 mm threshold in early trials, participants exhibited improved stability control as trials progressed. This enhancement likely reflects a combination of a learning effect and an increased understanding of the task requirements, underscoring the adaptability of postural control systems to the biomechanical challenges posed by flatfoot. The Time-in-Boundary method has proven to be an effective tool for clinicians to assess postural control, playing a vital role in developing customized rehabilitation strategies for individuals with flatfoot.

在单腿站立过程中使用边界时间法评估扁平足的姿势稳定性。
扁平足是一种以足弓塌陷为特征的足部畸形,严重影响个人的平衡和稳定性。本研究使用 "边界时间法 "探讨了患有和不患有扁平足的人的姿势调整和摇摆偏移。这种方法通过在三次单腿站立试验中探索不同的压力中心半径阈值来评估相对稳定性。我们观察到阈值水平(F = 4.37,p = 0.04)和归一化相对稳定时间(F = 7.64,p = 0.01)之间存在明显的交互作用,尤其是在最初的试验中。最初,平足组在 10 毫米、15 毫米和 20 毫米阈值处的稳定时间明显减少,在随后的试验中扩大到 25 毫米和 30 毫米。尽管在早期试验中,30 毫米阈值处的稳定性明显下降,但随着试验的进行,参与者的稳定性控制能力有所提高。这种提高可能反映了学习效应和对任务要求理解的加深,突出了姿势控制系统对扁平足带来的生物力学挑战的适应性。事实证明,边界时间法是临床医生评估姿势控制的有效工具,在为扁平足患者制定个性化康复策略方面发挥着重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Orthopaedic Research®
Journal of Orthopaedic Research® 医学-整形外科
CiteScore
6.10
自引率
3.60%
发文量
261
审稿时长
3-6 weeks
期刊介绍: The Journal of Orthopaedic Research is the forum for the rapid publication of high quality reports of new information on the full spectrum of orthopaedic research, including life sciences, engineering, translational, and clinical studies.
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