calcaneonavicular
calcaneoscaphoid

These might also be known as a calcaneonavicular bar or talocalcaneal bar.

Its fibers blend with those of the plantar calcaneonavicular ligament.

The calcaneonavicular ligament (ligamentum calcaneonaviculare) is attached to the lateral side of the navicular.

Plantar calcaneonavicular ligament (Spring ligament)

The plantar calcaneonavicular ligament (also known as the spring ligament) is a ligament on the underside of the foot that connects the calcaneus with the navicular bone.

The plantar calcaneonavicular ligament helps to maintain the medial longitudinal arch of the foot and by providing support to the head of the talus bears the major portion of the body weight.

'Formes fruste type of Calcaneonavicular Coalition", the mildest type of CN coalition prior to Fibrous, Cartilaginous, or osseous types.

The plantar calcaneonavicular ligament is a broad and thick band of fibers, which connects the anterior margin of the sustentaculum tali of the calcaneus to the plantar surface of the navicular.

The two most common types are the calcaneonavicular coalition where there is a failure of separation between the calcaneus and the navicular bones and the talocalcaneal coalition between the calcaneus and the talus bones.

The bifurcated ligament (internal calcaneocuboid, interosseous ligament or bifurcate ligament) is a strong band, attached behind to the deep hollow on the upper surface of the calcaneus and dividing in front in a Y-shaped manner into a calcaneocuboid and a calcaneonavicular part.

The talocalcaneonavicular articulation is a ball and socket joint: the rounded head of the talus being received into the concavity formed by the posterior surface of the navicular, the anterior articular surface of the calcaneus, and the upper surface of the plantar calcaneonavicular ligament.

The deltoid ligament supports the medial side of the joint, and is attached at the medial malleolus of the tibia and connect in four places to the sustentaculum tali of the calcaneus, calcaneonavicular ligament, the navicular tuberosity, and to the medial surface of the talus.