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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: Jul 14, 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

Noise-enhanced postural stability in subjects with functional ankle instability.

¹Department of Health and Human Performance, Virginia Commonwealth University, 1015 W Main St, PO box 842020, Richmond, VA 23284-2020, USA. seross@vcu.edu

British Journal of Sports Medicine

|June 7, 2007

Summary

Stochastic resonance (SR) stimulation improved postural stability in individuals with functional ankle instability (FAI). This technique may reduce the risk of ankle sprains by enhancing sensorimotor signals.

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Experimental Methods to Study Human Postural Control

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Area of Science:

Sports Medicine
Biomechanics
Neurology

Background:

Functional ankle instability (FAI) is characterized by recurrent ankle sprains and instability.
Postural stability is crucial for preventing ankle injuries.

Purpose of the Study:

To investigate the effects of stochastic resonance (SR) stimulation on postural stability in individuals with FAI.
To determine if SR stimulation can enhance sensorimotor function related to balance.

Main Methods:

Experimental research design involving 12 participants with FAI.
Single-leg balance tests were conducted under varying intensities of subsensory SR stimulation (0.05 mA, 0.01 mA) and control conditions.
Centre-of-pressure velocity (COPV-R) was measured to assess postural stability.

Main Results:

Optimal SR stimulation significantly improved COPV-R compared to the control condition (p<0.05).
Nine participants responded best to 0.05 mA, while three responded best to 0.01 mA.
Slower COPV-R indicates enhanced postural stability.

Conclusions:

SR stimulation shows potential for enhancing postural stability in individuals with FAI.
This intervention may improve sensorimotor signal detection, potentially reducing the incidence of ankle sprains.