<prompt> Commonest ligament injured in ankle injury ?Anterior talofibular ligamentCalcaneofibular ligamentPosterior talofibular ligamentSpring ligament  <response>: Ans. is a i.e., Anterior talofibular ligament The ankle is one of the most common sites for acute musculoskeletal injuries. Sprains constitute 85 of all ankle injuries, and 85 of those involve a lateral inversion mechanism. Inversion Sprain - Inversion ankle sprains occur when the foot turns in or out to an abnormal degree relative to the ankle. The most common mechanism of an ankle sprain is a combination of plantarflexion and inversion where the foot is pointing downward and inward. The lateral ligaments are involved in an inversion ankle sprain and hence most commonly damaged. These ligaments are on the outside of the ankle, which includes the anterior talofibular ATFL, calcaneofibular CFL and posterior talofibular ligaments PTFL. Injury to the ATFL is the most common. When both the ATFL and CFL are injured together, ankle instability will be more noticeable. The PTFL is the strongest of the three ligaments and is rarely injured in an inversion sprain. 