Posterior tibiofibular ligament
The posterior tibiofibular ligament is a term that is used to describe a fibrous band that travels horizontally over the tibiofibular syndesmosis' posterior aspect. The tibiofibular syndesmosis is a fibrous meeting area of the fibula and the tibia which is composed of the interosseus membrane and both the interosseous and anterior ligaments. One of the primary functions of the tibiofibular ligament is to make up the back "wall" area of the recipient socket for the talus' trochlea. The trochlea is a fibrous structure that is shaped similarly to a pulley. The posterior tibiofibular ligament is part of the lateral malleolus, which is one of the fibula bone's sharp and bony lower extremitie near the ankles. It is significantly smaller in size than the lateral malleolus' anterior ligament, which is flat and triangular in shape. Another common name for the ligament is posterior inferior ligament. The tibiofibular ligament is situated in close proximity to the anterior talofibular ligament, the calcaneofibular liament and the posterior tablofibular ligament.
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In Depth: Posterior tibiofibular ligament