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An injury to the anterior talofibular ligament (ATFL) is the most common type of lateral ankle sprain. The ATFL connects the talus (ankle bone) to the fibula. Anterior talofibular ligament sprain symptoms include pain or soreness, swelling, difficulty walking, bruising, and stiffness in the joint.
The weakest and most commonly injured ligament in the ankle is the anterior talofibular ligament. This is a lateral ligament, which means it consists of a band of connective tissue and is located on the outside of the ankle. It is near the posterior talofibular ligament.