A Superior View Of The Posterior Talar Articular Surface On The Calcaneus

Description

Rotating through a superior perspective over the hindfoot, the animation centers on the calcaneus (heel bone) and its posterior talar articular surface, the broad, smooth, oval facet on the superior calcaneal body that meets the posterior facet of the talus to form the posterior subtalar (talocalcaneal) joint. Medial to lateral contour changes are readable as the facet’s convexity rolls under the viewer, while the surrounding nonarticular calcaneal cortex falls away inferiorly toward the plantar aspect. The sequence keeps the calcaneotalar relationship clear, emphasizing how the posterior facet occupies most of the superior calcaneal surface compared with the smaller anterior and middle facets (when present as separate facets). Spatial orientation stays grounded in anatomical position. Subtalar joint mechanics live and die on this surface. Variations in posterior facet shape and orientation influence hindfoot inversion and eversion and are central to the radiographic and CT assessment of calcaneal fractures, where intra-articular extension can step off the posterior facet and predispose to post-traumatic subtalar arthritis. Motion adds clarity here, because subtle convexity, facet margins, and the way the articular surface sits relative to the calcaneal body are easier to appreciate while the bone turns than from a single still. Use this animation in gross anatomy and lower-limb musculoskeletal courses to teach tarsal joint surfaces, in orthopaedic and podiatry lectures discussing intra-articular calcaneal fracture patterns, and in radiology education when correlating 3D bony anatomy with coronal and sagittal hindfoot imaging. Anatomical accuracy verified by SciePro's Medical Advisory Board.