The lateral collateral ligament of ankle joint (or external lateral ligament of the ankle-joint) is a ligament complex of the ankleLateral Ankle Ligaments: An Insight Into Their Functional Anatomy, Variations, and Surgical Importance, Cureus: Journal of Medical Science, 8 February 2024 collectively composed of three ligaments attached to the fibula:
anterior talofibular ligament posterior talofibular ligament calcaneofibular ligament.
Together, these liaments attach to the talus, talus, and calcaneus bones respectively, and help stabilize the lateral ankle.Lateral Ankle Instability: Review of the Diagnosis & Treatment, Surgicoll, 22 March 2025
The anterior talofibular ligament is the most common ligament involved in an ankle sprain, and the weakest of the lateral collateral complex.Acute ankle Sprain, National Library of Medicine, National Institute for Health, 2 August 2025
Structure Its components are: anterior talofibular ligament The anterior talofibular ligament attaches the anterior margin of the lateral malleolus to the adjacent region of the talus bone. The most common ligament involved in an ankle sprain is the anterior talofibular ligament. posterior talofibular ligament The posterior talofibular ligament runs horizontally between the neck of the talus and the medial side of lateral malleolus calcaneofibular ligament The calcaneofibular ligament is attached on the posteromedial side of lateral malleolus and descends posteroinferiorly below to a lateral side of the calcaneus.
References
See also Sprained ankle