Investigating the Effects of Cognitive Functional Therapy on Pain, Physical Function, and Kinesiophobia in Individuals With Chronic Ankle Sprain

The aim of this study is to investigate the effects of Cognitive Functional Therapy (CFT) on pain, physical function, and kinesiophobia in individuals with chronic ankle sprain (CAS). This study will follow a structured clinical research protocol designed to evaluate the effects of Cognitive Functional Therapy (CFT) on individuals with chronic ankle sprain.

This study is an experimental clinical intervention with a two-time-point measurement design. The Cognitive Functional Therapy (CFT) program will be applied to individuals with chronic ankle sprain, and its effects will be evaluated at baseline (before intervention) and after the 12-week intervention.

The study will take place between January 2026 and June 2026. All participants will undergo an initial eligibility screening by an orthopedic specialist prior to enrollment. Following informed consent, eligible participants will attend a baseline assessment session, complete validated self-report questionnaires, and then begin a 12-week individualized CFT program consisting of seven sessions. Interventions will be delivered by a trained physiotherapist with clinical experience in musculoskeletal rehabilitation and certification in CFT principles. All data collection, including digital files and paper records, will be securely stored in encrypted systems accessible only to the research team. At the conclusion of the 12-week program, participants will fill the same questionnaires they filled at the beginning of the study as an outcome measurement.

The outcome measurements are VAS, TSK-17, and FAAM questionnaires.