Fig. 9
From: A new classification of talocalcaneal coalitions based on computed tomography for operative planning
57-year-old man with an IV-AMP type coalition involving the anterior, middle and posterior facets. (A, B, C) Fused talus and calcaneus form a complete osseous coalition (white arrow) involving the anterior, middle and posterior facets. (B) The tarsal sinus (black arrow) can be seen. (C) 3D construction image shows that the talus and calcaneus fuse together (oval) without the open of tarsal sinus