{"title":"Uncovering the alterations in extrinsic foot muscle mechanical properties and foot posture in fibromyalgia: a case-control study.","authors":"Ceren Ornek, Ilke Coskun Benlidayi, Aylin Sariyildiz","doi":"10.1007/s00296-024-05743-w","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>The aim of the study was to evaluate foot posture and the mechanical properties of extrinsic foot muscles in fibromyalgia.</p><p><strong>Methods: </strong>Patients with fibromyalgia (n = 86) and age- and gender-matched controls (n = 41) were included in the study. Foot Posture Index (FPI), Beighton and Brighton criteria were used to evaluate static foot posture, joint hypermobility, and benign joint hypermobility syndrome (BJHS), respectively. Tonus, elasticity, and stiffness of the extrinsic foot muscles including gastrocnemius medialis, tibialis anterior, and peroneus longus were measured by the MyotonPRO<sup>®</sup> device. Foot function, quality of life, and physical activity level were assessed by the Foot Function Index (FFI), Short Form-36 (SF-36), and the International Physical Activity Questionnaire-Short Form (IPAQ-SF), respectively.</p><p><strong>Results: </strong>The frequency of abnormal foot posture in the fibromyalgia and control groups was 68.6% versus 39%, respectively; and neutral foot posture was approximately twice as prevalent in the control group compared to the fibromyalgia group (p = 0.006). Pronated foot posture was the most common abnormality in fibromyalgia (61.6%) and observed in 85.5% of the patients with joint hypermobility and in 87.1% of those meeting BJHS criteria. The elasticity of peroneus longus at rest and the elasticity of tibialis anterior in the standing position were significantly different between the fibromyalgia group and the control group [1.08 (0.22) vs. 1.02 (0.25), p = 0.037 and 0.92 (0.29) vs. 0.87 (0.24), p = 0.011, respectively]. Regarding the fibromyalgia group, no difference was detected among foot posture groups in terms of myotonometric data.</p><p><strong>Conclusions: </strong>Pronation foot posture is common in fibromyalgia with a much higher frequency in fibromyalgia patients with hypermobility. In daily clinical practice for fibromyalgia, particular attention should be given to foot alignment.</p>","PeriodicalId":21322,"journal":{"name":"Rheumatology International","volume":" ","pages":"2997-3008"},"PeriodicalIF":3.2000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rheumatology International","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s00296-024-05743-w","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/11/6 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"RHEUMATOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Objectives: The aim of the study was to evaluate foot posture and the mechanical properties of extrinsic foot muscles in fibromyalgia.
Methods: Patients with fibromyalgia (n = 86) and age- and gender-matched controls (n = 41) were included in the study. Foot Posture Index (FPI), Beighton and Brighton criteria were used to evaluate static foot posture, joint hypermobility, and benign joint hypermobility syndrome (BJHS), respectively. Tonus, elasticity, and stiffness of the extrinsic foot muscles including gastrocnemius medialis, tibialis anterior, and peroneus longus were measured by the MyotonPRO® device. Foot function, quality of life, and physical activity level were assessed by the Foot Function Index (FFI), Short Form-36 (SF-36), and the International Physical Activity Questionnaire-Short Form (IPAQ-SF), respectively.
Results: The frequency of abnormal foot posture in the fibromyalgia and control groups was 68.6% versus 39%, respectively; and neutral foot posture was approximately twice as prevalent in the control group compared to the fibromyalgia group (p = 0.006). Pronated foot posture was the most common abnormality in fibromyalgia (61.6%) and observed in 85.5% of the patients with joint hypermobility and in 87.1% of those meeting BJHS criteria. The elasticity of peroneus longus at rest and the elasticity of tibialis anterior in the standing position were significantly different between the fibromyalgia group and the control group [1.08 (0.22) vs. 1.02 (0.25), p = 0.037 and 0.92 (0.29) vs. 0.87 (0.24), p = 0.011, respectively]. Regarding the fibromyalgia group, no difference was detected among foot posture groups in terms of myotonometric data.
Conclusions: Pronation foot posture is common in fibromyalgia with a much higher frequency in fibromyalgia patients with hypermobility. In daily clinical practice for fibromyalgia, particular attention should be given to foot alignment.
期刊介绍:
RHEUMATOLOGY INTERNATIONAL is an independent journal reflecting world-wide progress in the research, diagnosis and treatment of the various rheumatic diseases. It is designed to serve researchers and clinicians in the field of rheumatology.
RHEUMATOLOGY INTERNATIONAL will cover all modern trends in clinical research as well as in the management of rheumatic diseases. Special emphasis will be given to public health issues related to rheumatic diseases, applying rheumatology research to clinical practice, epidemiology of rheumatic diseases, diagnostic tests for rheumatic diseases, patient reported outcomes (PROs) in rheumatology and evidence on education of rheumatology. Contributions to these topics will appear in the form of original publications, short communications, editorials, and reviews. "Letters to the editor" will be welcome as an enhancement to discussion. Basic science research, including in vitro or animal studies, is discouraged to submit, as we will only review studies on humans with an epidemological or clinical perspective. Case reports without a proper review of the literatura (Case-based Reviews) will not be published. Every effort will be made to ensure speed of publication while maintaining a high standard of contents and production.
Manuscripts submitted for publication must contain a statement to the effect that all human studies have been reviewed by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in an appropriate version of the 1964 Declaration of Helsinki. It should also be stated clearly in the text that all persons gave their informed consent prior to their inclusion in the study. Details that might disclose the identity of the subjects under study should be omitted.