The lateral collateral ligament of the ankle injury, especially the anterior talofibular ligament (ATFL) injury, is a common sports injury. Most patients are successfully treated with conservative treatment. However, chronic lateral ankle instability (CLAI) occurs in approximately 20-40% of cases. The classic Brostr?m-Gloud procedure is the "gold standard" for ATFL repair. In recent, the arthroscopic ATFL repair technique has become a hotspot. Although the reliability of arthroscopic repair technique and its nerve injury complication are still controversial, more and more studies confirm that the similar results can be obtained with either arthroscopic repair or open repair technique, but faster recovery after arthroscopic surgery.