Ligaments are fibrous, strong soft tissue structures that attach bone to bone. The primary job of ligaments is to allow for normal motion, provide stability and restrict excessive movement. The ligaments of the ankle are the primary stabilizers of the joint.

Four major ligaments hold together the ankle. The medial part of the ankle is supported by the strong and thick deltoid ligament, and runs from the medial malleolus of the tibia to the talus, calcaneus and navicular bone of the foot and ankle complex. On the lateral side of the ankle are three ligaments running from the lateral malleolus of the fibula. Two of these – the anterior talofibular ligament, and the posterior talofibular ligament- attach to the talus. The third calcaneofibular ligament attaches to the calcaneus, or heel bone.

These ligaments give the ankle lateral support and stability. The anterior talofibular ligament is the most commonly injured ligament in the body. Lateral ankle sprains account for 85% of all ankle sprains.

Common Conditions

  • ankle sprain (Grades 1,2, and 3)

  • lateral ankle sprain

  • ankle instability

  • ankle ligament tear

  • lateral ankle instability

  • anterior ankle instability

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