A Frontal View Of The Calcaneal Sustentaculum Tali

Description

Emerging from the medial aspect of the calcaneus, the sustentaculum tali projects as a horizontal bony shelf just inferior to the talus, its superior articular facet aligned to support the talar middle facet at the subtalar joint. From this frontal (anterior) perspective, the animation establishes the heel bone’s medial contour and then brings the sustentaculum into relief as it extends medially from the calcaneal body. Subtle rotation clarifies how this projection sits medial to the calcaneal tuberosity and inferior to the talar neck. A small structure, easy to miss. Clinically, the sustentaculum tali is a key landmark in hindfoot trauma and reconstructive surgery because it tends to remain relatively stable in calcaneal fractures, forming the basis of the “constant fragment” described in intra-articular fracture patterns. The sequence helps you appreciate how the sustentaculum’s articular surface relates to subtalar congruity and why collapse or malreduction here can drive painful subtalar arthritis and altered hindfoot alignment. Animated movement also clarifies the spatial corridor of the flexor hallucis longus tendon, which grooves the plantar aspect of this region and can be irritated with post-traumatic deformity or hardware. Use this animation in gross anatomy and musculoskeletal teaching to anchor subtalar joint orientation, tarsal relationships, and surgical landmarks of the medial hindfoot, and in orthopedic or podiatric education when discussing calcaneal fracture fixation strategies and postoperative complications. It also suits radiology teaching as a mental model for correlating axial and coronal CT views of the sustentaculum with operative planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.