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Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Related Experiment Video

Updated: Sep 8, 2025

A Mouse Model of Ankle-Subtalar Complex Joint Instability

A Mouse Model of Ankle-Subtalar Complex Joint Instability

Published on: October 28, 2022

Chronic Ankle Instability-Related Outcomes Associate With Ankle-Joint Loading During Walking.

Jaeho Jang¹, J Troy Blackburn², Joshua N Tennant³

¹Department of Kinesiology, University of Texas at El Paso.

Journal of Athletic Training

|August 20, 2025

Summary

This summary is machine-generated.

Chronic ankle instability (CAI) is linked to altered joint loading. This study found associations between ankle joint contact forces and gait biomechanics, suggesting potential therapeutic targets for CAI.

Keywords:

OpenSim joint contact force musculoskeletal modeling

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Area of Science:

Biomechanics
Orthopedics
Sports Medicine

Background:

Chronic ankle instability (CAI) involves recurrent trauma and altered biomechanics, leading to abnormal joint loading.
Previous research indicates that individuals with CAI exhibit different joint contact force (JCF) profiles during walking and landing compared to healthy individuals.
A knowledge gap exists regarding the relationship between ankle JCF and clinical outcomes in CAI.

Purpose of the Study:

To investigate the interrelationships between ankle JCF, structural measures, postural control, and walking biomechanics in individuals with CAI.
To determine if CAI-related variables can predict ankle JCF.

Main Methods:

Cross-sectional study conducted in a research laboratory setting.
Involved 21 participants with CAI (mean age 23 ± 4 years).
Measured triaxial peaks, impulses, and loading rates of ankle JCF, alongside rearfoot alignment, Star Excursion Balance Test, weight-bearing lunge test, and walking biomechanics (angles and moments).

Main Results:

Less compressive JCF was associated with more rearfoot varus alignment and greater peak inversion moments during walking.
Greater posterior JCF correlated with increased peak eversion and dorsiflexion moments, and less rearfoot varus.
Increased lateral JCF was linked to greater dorsiflexion moments and less rearfoot varus alignment during walking.

Conclusions:

The study identified potential associations between gait biomechanics, structural alignment, and postural control with ankle JCF in individuals with CAI.
Further research is warranted to explore whether interventions targeting these factors can modify ankle joint mechanical loading during walking.