Cuneiform, Inferior View

Description

Clustered in the plantar midfoot, the medial, intermediate, and lateral cuneiforms sit distal to the navicular and proximal to the bases of the first, second, and third metatarsals, forming a stepped series from medial to lateral. From an inferior perspective, their wedge geometry is apparent, with the broader plantar aspects contributing to the transverse arch while their smaller dorsal surfaces would lie superiorly. Medially the medial cuneiform aligns with the first ray, while the intermediate and lateral cuneiforms lie progressively more lateral, approaching the cuboid at the lateral midfoot. Articular margins are defined by hyaline cartilage at the intercuneiform and cuneometatarsal joints. This angle matters because it clarifies how the cuneiforms lock the midfoot during toe-off and how small shifts at the Lisfranc complex can destabilize the medial column. Subtle diastasis between the medial cuneiform and the base of the second metatarsal, or between the cuneiforms themselves, is a common pattern in Lisfranc injury and can be missed without a solid mental model of the plantar architecture. The cuneiforms also form the bony bed for the distal tendon of tibialis posterior and the fibularis longus pulley under the cuboid, landmarks frequently referenced when discussing adult-acquired flatfoot and midfoot reconstructive planning. Small bones, big consequences. Use this illustration for gross anatomy and musculoskeletal anatomy modules covering the tarsus, for orthopaedic and podiatry teaching on midfoot stability and Lisfranc patterns, or as a figure in radiology and surgical texts where plantar bony contours explain injury mechanics and fixation strategy. Anatomical accuracy verified by SciePro's Medical Advisory Board.