Posterior Calcaneal Articular Facet Of The Talus In Inferior View

Description

Rotating in an inferior view, the talus is isolated to highlight the posterior calcaneal articular facet, the dominant, deeply concave surface on the plantar aspect of the talar body. The sequence maintains orientation with the trochlea of the talus positioned superiorly and the talar neck extending anteriorly, while the posterior process and its medial and lateral tubercles frame the facet posteriorly. As the model turns, the posterior facet is read in context against the subtalar geometry, with the sulcus tali and the margin of the middle and anterior calcaneal facets appearing more anteriorly. Curvature and rim contour remain the focus. Subtalar mechanics hinge on this facet. Its congruence with the posterior talar articular surface of the calcaneus governs inversion and eversion, and small changes in surface shape explain why calcaneal fractures, subtalar dislocations, and post-traumatic subtalar arthritis so often present with persistent hindfoot pain and loss of uneven-ground tolerance. Animation clarifies what textbooks struggle to convey: the way the facet’s oblique orientation relates to the interosseous talocalcaneal ligament within the sinus tarsi and to the posterior talofibular region, where fracture lines and surgical corridors are planned. Short and clear. Use this clip in gross anatomy and musculoskeletal modules when introducing tarsal osteology and the talocalcaneal joint, or in orthopaedic and podiatric teaching materials on subtalar arthrodesis, calcaneal fracture classification, and hindfoot alignment. It also fits slide decks for radiology correlation, helping learners match the inferior bony landmarks to CT and 3D reconstructions of the subtalar joint. Anatomical accuracy verified by SciePro's Medical Advisory Board.