Alterations in Ankle Eversion-to-Inversion Muscle Strength and Postural Control in Individuals with Chronic Lateral Ankle Instability.

CLAI is characterized by eversion muscle weakness and an impaired eversion-to-inversion strength ratio. Postural control deficits manifest primarily under visual deprivation, suggesting proprioceptive impairment, though visual input enables partial compensation during eyes-open conditions.