Calcaneal Process Of The Cuboid Bone, Inferior View

Description

Cuboid bone anatomy is centered on the calcaneal process in this inferior (plantar) view, where a posteriorly directed projection extends toward the calcaneus at the lateral midfoot. From this fixed perspective, the plantar surface of the cuboid sits anterior to the calcaneus and lateral to the navicular region, with the calcaneocuboid joint line implied along the posterior articular margin. Adjacent plantar landmarks that are typically appreciable in this orientation include the cuboid tuberosity and the oblique groove for the tendon of fibularis (peroneus) longus, which crosses plantar-medially after coursing behind the lateral malleolus. Lateral column mechanics hinge on this junction. The calcaneocuboid joint, stabilized inferiorly by the short plantar (plantar calcaneocuboid) ligament and the long plantar ligament spanning toward the bases of the lateral metatarsals, is a common pain generator in midfoot arthritis and after inversion injuries that produce avulsion fragments from the cuboid or anterior process of the calcaneus. Subtle malalignment at the calcaneocuboid articulation can also present clinically as lateral midfoot pain often labeled cuboid syndrome, where understanding the plantar contour of the cuboid and its calcaneal process helps explain tenderness and load sensitivity during push-off. A compact landmark. Lighting and surface modeling make the plantar bony relief readable without crowding the field with adjacent tarsals. Use this illustration in gross anatomy and podiatric medicine teaching sets on tarsal osteology, in orthopaedic foot and ankle chapters discussing calcaneocuboid arthrodesis landmarks, or in radiology correlation pages that orient oblique foot radiographs and CT to the plantar cuboid surface. Anatomical accuracy verified by SciePro's Medical Advisory Board.