Related Experiment Video
Updated: May 9, 2026
Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
Published on: September 18, 2020
Critical review of self-reported functional ankle instability measures: a follow up
Janet Simon1, Matthew Donahue2, Carrie L Docherty1
1Department of Kinesiology, Indiana University, 1025 E. 7th Street, Bloomington, IN, USA.
Objective:
Determine which ankle instability questionnaire predicts subject's ankle instability status based on a minimum accepted criteria for FAI (MC_FAI).
Design:
Cross-sectional study.
Setting:
Large Midwestern University.
Participants:
College aged subjects (n = 1127 19.6 ± 2.1 years) from a university population were recruited for this study. Any volunteer, regardless of ankle injury history was included in the study.
Main Outcome Measures:
The independent variables were the score on three self-report ankle instability questionnaires: Ankle Instability Instrument, Cumberland Ankle Instability Tool, and Identification of Functional Ankle Instability. Subjects completed the questionnaires for their dominant limb during a single testing session. The dependent variable was created based on the previously established MC_FAI. This was established as at least one ankle sprain and at least one episode of giving way. Data were modeled using a chi-square and multinomial logistic regression. 95% confidence intervals were calculated for the resulting odds ratios.
Results:
A test of the full model with all three predictors against MC_FAI revealed that only the IdFAI (X² = 457.09, p = .001) had a significant relationship with the outcome variable. The IdFAI had an overall prediction rate of 87.8%.
Conclusions:
This analysis illustrates that IdFAI is a good overall option for predicting ankle stability status by self-reported questionnaire.
