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

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Published on: September 18, 2020

Biomechanical Response to External Biofeedback During Functional Tasks in Individuals With Chronic Ankle Instability.

Danielle M Torp¹, Abbey C Thomas¹, Tricia Hubbard-Turner¹

¹Department of Kinesiology, University of North Carolina at Charlotte.

Journal of Athletic Training

|November 5, 2020

Summary

This summary is machine-generated.

Real-time biofeedback, using visual or auditory cues, improved balance strategies and altered foot pressure distribution in individuals with chronic ankle instability (CAI). These findings suggest biofeedback can effectively modify biomechanics during functional tasks.

Keywords:

ankle sprains balance external focus of attention

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Published on: April 12, 2016

Area of Science:

Biomechanics
Rehabilitation Science
Sports Medicine

Background:

Chronic ankle instability (CAI) is linked to recurrent injuries and osteoarthritis due to altered biomechanics.
Current interventions often fail to correct these aberrant biomechanics.
External biofeedback is being explored as a potential method to modify biomechanics in real-time.

Purpose of the Study:

To investigate the immediate effects of visual and auditory biofeedback on functional task biomechanics in individuals with CAI.
To assess if real-time biofeedback can lead to observable changes in movement patterns.

Main Methods:

A crossover study design was employed in a laboratory setting.
Nineteen physically active adults with CAI participated.
Participants performed balance, step down, hop, and lunge tasks under baseline and two biofeedback conditions (visual and auditory).

Main Results:

Both visual and auditory biofeedback modulated center-of-pressure (COP) distribution during balance tasks.
Visual biofeedback increased lateral heel pressure during hops.
Auditory biofeedback influenced pressure during step downs and lunges, with some differences noted between eyes-open and eyes-closed conditions.

Conclusions:

Real-time biofeedback, both visual and auditory, demonstrated immediate improvements in balance strategies.
External biofeedback appears effective in moderating biomechanics during various functional tasks in individuals with CAI.