The aim of this study is to examine the flexibility of the structures around the ankle in individuals with unilateral chronic ankle instability. Individuals between the ages of 18-45 who have been diagnosed with chronic ankle instability by an orthopedist and who have unilateral instability will be included in the study. The flexibility of the healthy and instability sides will be evaluated. Demographic information of the individuals will be recorded and clinical evaluations will be made. The severity of ankle instability will be evaluated with the Functional Ankle Identification (FABIT). The foot posture of the individuals participating in the study will be evaluated with the Foot Posture Index, and the degree of flat feet will be evaluated with the Navicular Drop Test. The flexibility of the gastrocnemius, tibialis anterior, peroneus longus, achilles tendon and plantar fascia of the individuals participating in the study will be measured with a myotonometer.

Inclusion Criteria:

• Ages 18 to 45
• Mini Mental State Exam (MMSE) score of 24 to 30
• Diagnosed with unilateral chronic ankle instability by a physician

Exclusion Criteria:

• Inability to communicate verbally
• Use of a walking aid
• Any history of lower extremity surgery
• People with severe visual impairment, neurological disorders and/or congestive heart failure.

Individuals with Chronic Ankle Instability