Chronic Ankle Instability
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. A history of at least 1 significant ankle sprain: (1) The initial sprain must have occurred at least 12 months prior to study enrollment; (2) Was associated with inflammatory symptoms (pain, swelling, etc); (3) Created at least 1 interrupted day of desired physical activity; (4) The most recent injury must have occurred more than 3 months prior to study enrollment; (5) We endorse the definition of an ankle sprain as an acute traumatic injury to the lateral ligament complex of the ankle joint as a result of excessive inversion of the rear foot or a combined plantar flexion and adduction of the foot. This usually results in some initial deficits of function and disability. 2. A history of the previously injured ankle joint giving way, and/or recurrent sprain, and/or feelings of instability. (1) We endorse the definition of giving way as the regular occurrence of uncontrolled and unpredictable episodes of excessive inversion of the rear foot (usually experienced during initial contact during walking or running), which do not result in an acute lateral ankle sprain. - Specifically, participants should report at least 2 episodes of giving way in the 6 months prior to study enrollment (2) We endorse the definition of recurrent sprainas two or more sprains to the same ankle; (3) We endorse the definition of feeling of ankle joint instability as the situation whereby during activities of daily living (ADL) and sporting activities the subject feels that the ankle joint is unstable and is usually associated with the fear of sustaining an acute ligament sprain; - Specifically, self-reported ankle instability should be confirmed with a validated ankle instability–specific questionnaire using the associated cutoff score. Proposed questionnaires: Identification of Functional Ankle Instability: score of >=11; 3. Aged 18 to 60 years.
Exclusion criteria
Exclusion criteria: 1. A history of previous surgeries to the musculoskeletal structures (ie, bones, joint structures, nerves) in either lower extremity; 2. A history of a fracture in either lower extremity requiring realignment; 3. Acute injury to musculoskeletal structures of other joints of the lower extremity in the previous 3 months that impacted joint integrity and function (ie, sprains, fractures), resulting in at least 1 interrupted day of desired physical activity; 4. Any reason except for ankle sprain which causing any limited ankle range of motion; 5. Any dysfunction of hips and knees; 6. Presence of High arch foot due to neuropathy.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| kinematics;kinetics;muscle activities by EMG; | — |
Secondary
| Measure | Time frame |
|---|---|
| plantar pressure distribution; | — |
Countries
China