ANATOMY

Detailed explanation-1: -Overview. A sprain is a stretching or tearing of ligaments-the tough bands of fibrous tissue that connect two bones together in your joints.

Detailed explanation-2: -The three ligaments that compose the lateral complex are the anterior talofibular (ATFL), the calcaneofibular (CFL), and posterior talofibular (PTFL) and they tend to be injured in this order with the anterior talofibular ligament being injured most commonly.

Detailed explanation-3: -Sprains and strains are soft-tissue injuries distinguished by the type of tissue they affect. Sprains occur in the ligaments, which are fibrous tissues connecting bones or cartilage in the joints. Strains are located in the muscles, tendons, or both, tendons being the fibrous tissues that connect muscles and bones.

Detailed explanation-4: -The most common type of ankle sprain is an inversion injury, or lateral ankle sprain. The foot rolls inward, damaging the ligaments of the outer ankle-the anterior talofibular ligament, the calcaneofibular ligament, and the posterior talofibular ligament.