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Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
Published on: September 18, 2020
9.1K
Does the single-limb stance reflect chronic ankle instability in an athlete?
Takeshi Toyooka1, Yukio Urabe2, Shiro Sugiura3
1Department of Rehabilitation, Nishikawa Orthopaedic Clinic, 1-14-2 Osakidai, Sakura-city, Chiba, 285-0817, Japan.
Gait & Posture
|September 15, 2018
Summary
The single-limb stance test may not accurately assess chronic ankle instability in athletes. Clinicians should use activity-specific evaluations for better insights into athlete function and ankle stability.
Area of Science:
- Sports Medicine
- Biomechanics
- Orthopedics
Background:
- The single-limb stance (SLS) test is a common static balance assessment for chronic ankle instability.
- However, its effectiveness in reflecting functional limitations in athletes with varying sprain histories is unclear.
Purpose of the Study:
- To investigate if SLS performance accurately reflects subjective ankle instability and functional capacity in athletes.
- To determine the influence of previous ankle sprain frequency on SLS test results and subjective scores.
Main Methods:
- 102 high school basketball players were assessed at the season's start.
- Participants were grouped by ankle sprain frequency.
- The Karlsson ankle function score (K score) and single-limb stance (SLS) with center of pressure (COP) analysis were used.
Main Results:
- No significant differences in COP parameters were found across sprain history groups.
- Lower K scores (indicating poorer function) were observed in athletes with three prior sprains.
- Weak correlations between K score and COP existed for athletes with 0-1 sprains, while strong correlations were found for those with three sprains.
Conclusions:
- The SLS test may not be a reliable indicator of ankle instability and functional deficits in athletes.
- Clinicians should select evaluation tools tailored to an athlete's specific activity level and injury history.
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