Relationship Between Ankle Planterflexors Peak Torque and Balance in Patients With Functional Ankle Instability

Statement of the problem Was there a difference in calf muscle strength (concentric and eccentric) between the affected limb with instability and the non-affected limb? Was there a relationship between the severity of ankle instability and calf muscle strength (concentric and eccentric) at velocities of 60 and 120°/s in patients with functional ankle instability? Was there a relationship between calf muscle strength (concentric and eccentric) deficits and functional performance in patients with functional ankle instability?

Purpose of The Study

This study attempted to:

1. Investigate the difference in calf muscle strength (concentric and eccentric) between affected limb with instability and non-affected limb.
2. Assess the relationship between the severity of ankle instability and calf muscle strength (concentric and eccentric) at velocity (60 and 120◦/s) in patients with functional ankle instability?
3. Investigate the relationship between calf muscle strength (concentric and eccentric) deficit and functional performance in functional ankle instability.

Significance of study Chronic ankle instability is recognized as one of the most common lower-extremity disorders encountered by orthopedic physical therapists The prevalence of CAI varies from 0.7% to 1.1% in young people, 20% in student-athletes, 23.4% in collegiate and high school athletes, and 29% in high school pupils Incidents of CAI are roughly 7/1000 person-years in the general population and up to 45/1000 person-years in those who engage in physical activity Chronic ankle instability may develop as a result of improper post-injury management and a lack of medical attention.