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Tibiocalcaneal Ligament
Connective Tissue

Tibiocalcaneal Ligament

Ligamentum calcaneotibiale

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Structure

The medial collateral ligament of the ankle joint is a strong fan-shaped ligament found on the medial aspect of the ankle. It is composed of four parts, including the tibionavicular, tibiocalcaneal, and anterior and posterior tibiotalar parts. All of the fibers arise from the apex and anterior and posterior borders of the medial malleolus.

The tibiocalcaneal part forms some of the more superficial fibers of the medial collateral ligament of the ankle joint. From the medial malleolus, the fibers of the tibiocalcaneal part descend to attach to the sustentaculum tali of the calcaneus bone.

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Anatomical Relations

The tendons of posterior tibialis and flexor digitorum longus muscles, along with the tibial nerve and posterior tibial artery, pass between the medial collateral ligament of the ankle joint and the flexor retinaculum of the foot.

Function

The medial collateral ligament of the ankle joint stabilizes the ankle joint during eversion of the foot and prevents subluxation of the ankle joint.

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