Table 1.

Eligibility criteria applied in this study

Inclusion criteria	Patients with more than one episode of ankle instability or ankle sprains within 6 months. The grades of ankle mechanical laxity for patients ≥ 1 on the clinical anterior drawer test Patients with differences between two ankle laxity of 10 degrees in talar tilt angle or absolute talar tilt angle of 15 degrees during radiographic evaluation
Exclusion criteria	The patients with insufficiency of ATiFL’s distal fascicle According to the radiographic classification, patients who suffered from CAI combined with rheumatoid arthritis or grade II or greater ankle degenerative arthritis Other factors: systemic disease history, neuromuscular disorders history, obesity, etc.