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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: Jun 16, 2026

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

Bracing does not improve dynamic stability in chronic ankle instability subjects.

Phillip A Gribble¹, Brittany L Taylor, Junji Shinohara

¹University of Toledo, 2801 W. Bancroft St, Toledo, OH 43606, United States. phillip.gribble@utoledo.edu

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine

|February 5, 2010

Summary

Ankle braces did not significantly improve dynamic postural stability in individuals with chronic ankle instability (CAI) during jump-landing tasks. Further research is needed to determine effective outcome measures for ankle brace efficacy in CAI populations.

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Area of Science:

Biomechanics
Sports Medicine
Orthopedics

Background:

Chronic ankle instability (CAI) affects a significant portion of the athletic population.
Dynamic postural stability is crucial for preventing re-injury in CAI.
Ankle braces are commonly used to manage CAI, but their efficacy requires objective validation.

Purpose of the Study:

To evaluate the impact of an ankle brace on dynamic postural stability in individuals with CAI.
To assess the sensitivity of Time to Stabilization (TTS) as an outcome measure for ankle brace effectiveness.

Main Methods:

A within-subjects repeated measures design was employed.
Fifteen participants with unilateral CAI performed a single-limb jump-landing task.
Ground reaction forces were analyzed to calculate Resultant Vector TTS (RVTTS) with and without an ankle brace.

Main Results:

No statistically significant differences were found in RVTTS between the braced and non-braced conditions.
Neither side nor condition showed a significant main effect on RVTTS.
No significant interaction effect was observed between side and condition.

Conclusions:

Time to Stabilization (TTS) may not be sensitive enough to detect the immediate effects of an ankle brace on dynamic stability in CAI.
Current dynamic stability measures might not adequately reflect the functional benefits of ankle braces in this population.
Further investigation into alternative outcome measures is warranted to accurately assess ankle brace efficacy in laboratory settings for CAI.