English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Although ankle injuries resulting from postural instability are frequentlyobserved during high-speed and intense physical activities, most currentresearch has been limited to static or quasi-static models of the lower limb,or has focused solely on the ankle joint itself. In this study, to explain thekinetic mechanism underlying postural instability and ankle twists, we presenta nonlinear dynamical model for the human lower limb that takes into accounttransient behavior and large rotations. The landing of the lower limb on theground is modeled as a mechanical system with two degrees of freedom (DoFs).The configuration of the lower limb mechanism can be completely defined by thevertical displacement and the inclination angle. We quantify the posturalstability of the lower limb using a dimensionless energy threshold. Numericalexamples verify the effectiveness of this stability indicator and demonstratethat individuals with a normal foot have better postural stability compared tothose with flat and high-arched feet, and are less likely to experience ankleinjuries in jumping and landing scenarios.

Why Do Humans Twist Their Ankle: A Nonlinear Dynamical Stability Model for Lower Limb