Ligament · Ankle

Posterior inferior tibiofibular ligament

The back band of the same syndesmosis, running from the back of the lower shin bone outward and downward to the back of the fibula, and thicker and stronger than the band in front. Its deepest fibres form a separate sheet — the inferior transverse ligament — which projects below the back edge of the tibia and deepens the socket the talus sits in, so this ligament does not only tie two bones together, it enlarges the joint surface. It lies immediately in front of the tendons that run behind the outer ankle.