Anterior Process Of The Heel Bone, Lateral View

Description

Calcaneus anatomy is focused on the anterior process in this lateral view, where a flat-ended projection extends distally from the anterior calcaneal body toward the midfoot. Superior to the process, the lateral aspect of the subtalar region and sinus tarsi contour are suggested by the change in bony planes, while the more plantar calcaneal surface sweeps inferiorly toward the heel (tuber calcanei). Along the lateral wall, the anterior process sits proximal to the calcaneocuboid articulation and anterior to the posterior calcaneal mass, creating a key landmark for orienting the hindfoot in lateral projection. Medial structures such as the sustentaculum tali remain out of profile. Anterior process anatomy matters because this region is a frequent site of missed fractures after inversion injuries, often mistaken for a lateral ankle sprain when tenderness localizes to the anterolateral hindfoot near the calcaneocuboid joint. The bifurcate ligament attaches here (calcaneonavicular and calcaneocuboid components), so cortical irregularity or an avulsion fragment at the anterior process can explain persistent pain and instability despite a normal-appearing ankle mortise. Fine bony relief and the fixed lateral perspective make it straightforward to teach the relationship between the anterior calcaneus, the distal tarsal row entry point, and the sinus tarsi corridor used for palpation and injection planning. Small structure, big implications. Use this illustration in gross anatomy and musculoskeletal radiology teaching sets to pair with lateral foot radiographs, CT reformats, or ultrasound correlation for anterolateral hindfoot pain. It also fits orthopedic and sports medicine publications discussing calcaneocuboid joint injuries, bifurcate ligament avulsions, and surgical approaches that protect the peroneal tendon sheath along the lateral calcaneus. Anatomical accuracy verified by SciePro's Medical Advisory Board.