Muscle activity and postural sway during standing balance tasks in adults with hallux valgus reporting low levels of foot pain: A case-control study

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-07-21 DOI:10.1016/j.clinbiomech.2025.106629

Sheree E. Hurn , Aaron J. Wholohan , Ainslie M. Davies , Karen J. Mickle , Melinda M. Franettovich Smith

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引用次数: 0

Abstract

Background

Hallux valgus is a common foot deformity potentially impacting balance, however previous studies report conflicting findings, and further exploration of postural sway mechanisms in hallux valgus is warranted. This study investigated the impact of hallux valgus on abductor hallucis muscle activation and postural sway during balance tasks, and correlations between foot characteristics and postural sway in hallux valgus.

Methods

Thirty adults with hallux valgus (mean age 53.7 ± 19.3 years) and 20 controls (mean age 50.0 ± 20.1 years) performed two static standing balance tasks: bipedal and single limb stance. Centre of pressure (COP) excursion was recorded using an AccuswayPLUS balance platform (AMTI), and surface electromyography was recorded using a MA300 system (Motion Lab Systems Inc.). Age, height, weight, self-reported foot pain, Foot Posture Index, foot mobility, hallux flexion strength and intrinsic foot muscle morphology (via ultrasound imaging) were measured.

Findings

There were no significant between-group differences in muscle activity or postural sway during balance tasks. The hallux valgus group had a more pronated Foot Posture Index compared to controls (P < 0.01) and larger cross-sectional area of the abductor hallucis muscle (P = 0.02). Both groups reported low levels of foot pain. In hallux valgus participants, increased anteroposterior sway was associated with reduced foot mobility (r = −0.45, P = 0.02), and greater COP path excursion was associated with reduced abductor hallucis cross-sectional area (r = −0.45, P = 0.04).

Interpretation

Adults with hallux valgus reporting low levels of foot pain and showing no substantial intrinsic foot muscle atrophy or weakness, may demonstrate static postural control equivalent to age-matched controls.

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在站立平衡任务中，患有拇外翻的成人报告低水平足部疼痛的肌肉活动和姿势摇摆：一项病例对照研究

拇外翻是一种常见的足部畸形，可能会影响平衡，然而先前的研究报告了相互矛盾的结果，需要进一步探索拇外翻的姿势摇摆机制。本研究探讨了拇外翻对平衡任务中外展幻肌激活和体位摇摆的影响，以及拇外翻足部特征与体位摇摆的相关性。方法30例成年拇外翻患者（平均年龄53.7±19.3岁）和20例对照组（平均年龄50.0±20.1岁）分别进行两足站立和单肢站立两种静态站立平衡任务。使用accuwayplus平衡平台（AMTI）记录压力中心（COP）偏移，使用MA300系统（Motion Lab Systems Inc.）记录表面肌电图。测量年龄、身高、体重、自述足部疼痛、足部姿势指数、足部活动性、拇屈曲强度和内在足部肌肉形态（通过超声成像）。研究发现：在平衡任务中，肌肉活动或姿势摇摆在两组之间没有显著差异。与对照组相比，外翻组的足前倾指数更高(P <；外展幻觉肌横截面积增大（P = 0.02）。两组患者均报告足部疼痛程度较低。在拇外翻参与者中，增加的前后摆动与足部活动能力降低相关（r = - 0.45, P = 0.02），而更大的COP路径偏移与外展幻觉横截面积减少相关（r = - 0.45, P = 0.04）。解释：患有拇外翻的成人报告足部疼痛程度低，没有实质性的内在足部肌肉萎缩或无力，可能表现出与年龄匹配的对照组相当的静态姿势控制。

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

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.