Anterior Talar Articular Surface Of The Calcaneus, Medial View

Description

Calcaneus anatomy is centered here on the anterior talar articular surface, the small, smooth facet perched on the anterior aspect of the sustentaculum tali along the medial side of the hindfoot. From this fixed medial perspective, the sustentaculum projects medially as a shelf, with the anterior talar facet oriented superiorly to meet the talus, while the surrounding calcaneal cortex curves inferiorly into the body of the heel bone. The facet sits anterior to the posterior talar articular surface of the calcaneus (subtalar facet complex) and just superior to the groove that contributes to the tarsal canal and sinus tarsi region. Accurate recognition of this anterior talar facet matters in both teaching and clinical practice because its size, contour, and continuity with adjacent facets vary, and those variations influence subtalar joint mechanics and patterns of degenerative change. Calcaneal fractures that involve the sustentaculum tali can propagate into this articular surface, creating step-off and post-traumatic subtalar arthritis, and the medial vantage point makes the relationship between the shelf-like sustentaculum and its articular cartilage footprint easy to judge. It is also a key reference when discussing subtalar coalition patterns and when planning hindfoot procedures that must preserve congruent talocalcaneal contact. Orthopaedic foot and ankle educators will find this illustration well suited for lectures on the subtalar joint, calcaneal facet anatomy, and classification of calcaneal fractures involving the sustentaculum. It also fits atlas-style plates and exam preparation material where learners need a reliable medial landmark for the talocalcaneal articulation and adjacent bony contours. Anatomical accuracy verified by SciePro's Medical Advisory Board.