발의 관절(Tarsal Joints)

1. Anatomical classification

1) Subtalar joint : Synovial joint between the inferior surface of the body of the talus and the superior surface of the calcaneus

2. Talonavicular joint : Synovial joint between the head of the talus on one side and the posterior surface of the navicular, superior surface of the spring ligament, and the sustentaculum tali of the calcaneus on the other side 

3) Calcaneocuboid joint : Synovial joint between the anterior surface of the calcaneus and the posterior surface of the cuboid

2. Functional classification

1) Subtalar joint : Articulation of the head of the talus with the spring ligament and the sustentaculum tali + anatomical subtalar joint 

2) Mid-tarsal joint(Transverse tarsal joint): Articulation of the head of the talus with the navicular lies in line with the calcaneouboid joint