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Definition
By Gregory R. Waryasz, MD
The posterior talofibular ligament of the musculoskeletal system is characterized by being the strongest of the lateral support structures.
It is part of the ankle joint. It consists of fibrous dense regular connective tissue of collagen fibers.
Its unique structural feature is that it is a thick and fairly strong band that runs from the malleolar fossa to the lateral tubercle of the talus.
The posterior talofibular ligament as well as all other bones, muscles, and ligaments of the body are derived of mesodermal origin in the embryo.
The function of the posterior talofibular ligament is to prevent talus bone movement.
Common diseases include ligament tears/sprains and fractures.
Commonly used diagnostic procedures include clinical history, physical exam, and MRI.
It is usually treated with physical therapy and NSAIDs for sprains. Fractures and dislocations are often treated with surgery.
References
Elstrom J, Virkus W, Pankovich (eds), Handbook of Fractures (3rd edition), McGraw Hill, New York, NY, 2006.
Koval K, Zuckerman J (eds), Handbook of Fractures (3rd edition), Lippincott Williams & Wilkins, Philadelphia, PA, 2006.
Lieberman J (ed), AAOS Comprehensive Orthopaedic Review, American Academy of Orthopaedic Surgeons, 2008.
Moore K, Dalley A (eds), Clinically Oriented Anatomy (5th edition), Lippincott Williams & Wilkins, Philadelphia, PA, 2006.