Medial Collateral Ligament of Ankle (Left)
Ligamentum collaterale mediale articulationis talocruralis
Read moreStructure
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 fibers of the tibionavicular part extend anteriorly to attach to the navicular tuberosity, as well as blending with fibers of the calcaneonavicular ligament.
—The fibers of the tibiocalcaneal part descend to attach to the sustentaculum tali of the calcaneus bone.
—The fibers of the anterior tibiotalar part pass anteriorly to the medial aspect of the talus bone.
—The fibers of the posterior tibiotalar part pass to the medial aspect of the talus and its posterior process.
Related parts of the anatomy
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.
