Ankle Kinematics and Neuromuscular Activity During the Stair-to-Ground Transition in Individuals With Acute Ankle Sprain: A Cross-Sectional Study.

IF 2.3 3区医学 Q1 ORTHOPEDICS

Journal of Foot and Ankle Research Pub Date : 2026-09-01 DOI:10.1002/jfa2.70221

Haowen Sun, Qing Chen, Yanhua Xie, Zhenzhong Wang

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引用次数: 0

Abstract

Background: Evidence regarding the biomechanics of stair-to-ground transitions after acute ankle sprain (AAS) remains limited. This study examined ankle kinematics, center-of-mass (COM) displacement, muscle activation, and intermuscular coherence during this transition.

Methods: Thirty individuals with AAS and 30 healthy controls completed the task while motion-capture, force-plate, and surface electromyography data were collected. Ankle kinematics were derived from motion capture, and COM displacement was obtained using a participant-scaled OpenSim model. Trial-level outcomes were averaged within each participant.

Results: At initial contact, the AAS group showed an ankle position that was 1.622° more plantarflexed and 2.661° more internally rotated than that of the control group. Transverse-plane COM displacement was 0.004 m lower in the AAS group (p = 0.011), whereas ankle range of motion did not differ between groups. Mean biceps femoris activation was lower, whereas mean medial gastrocnemius and tibialis anterior activation and peak tibialis anterior and soleus activation were higher in the AAS group (p < 0.05). In the AAS group, global efficiency, clustering coefficient, and network density were higher in the 0-25 Hz band than in the 25-50 Hz band (p < 0.05).

Conclusions: AAS was associated with altered ankle posture at initial contact, a smaller transverse-plane COM displacement amplitude, and differences in selected muscle-activation outcomes during the stair-to-ground transition.

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来源期刊

Journal of Foot and Ankle Research ORTHOPEDICS-

CiteScore

4.50

自引率

10.30%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Foot and Ankle Research, the official journal of the Australian Podiatry Association and The College of Podiatry (UK), is an open access journal that encompasses all aspects of policy, organisation, delivery and clinical practice related to the assessment, diagnosis, prevention and management of foot and ankle disorders. Journal of Foot and Ankle Research covers a wide range of clinical subject areas, including diabetology, paediatrics, sports medicine, gerontology and geriatrics, foot surgery, physical therapy, dermatology, wound management, radiology, biomechanics and bioengineering, orthotics and prosthetics, as well the broad areas of epidemiology, policy, organisation and delivery of services related to foot and ankle care. The journal encourages submissions from all health professionals who manage lower limb conditions, including podiatrists, nurses, physical therapists and physiotherapists, orthopaedists, manual therapists, medical specialists and general medical practitioners, as well as health service researchers concerned with foot and ankle care. The Australian Podiatry Association and the College of Podiatry (UK) have reserve funds to cover the article-processing charge for manuscripts submitted by its members. Society members can email the appropriate contact at Australian Podiatry Association or The College of Podiatry to obtain the corresponding code to enter on submission.