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Other Terms: Middle cuneiform, Second cuneiform bone, Second cuneiform bone of foot, Intermediate cuneiform, Os cuneiforme intermedium
This is the smallest of the three cuneiform bones. Like the lateral cuneiform the broad base of the wedge-shaped bone faces dorsally. Its lateral, medial, distal, and proximal surfaces are all smooth, cartilage covered articular facets. The narrow plantar and broad dorsal surfaces are roughened for the attachment of strong interosseous ligaments.
Cuneus is Latin for wedge. With the combining word form connoting shape the word becomes the wedge-shaped bone. Visual inspection of these bones reveals their tapering wedge-like nature.
It articulates with four bones: the lateral and medial cuneiform bones, the navicular bone, and the second metatarsal bone.
The bone ossifies from a single center that appears during the third postnatal year. It completes its ossification shortly after puberty.
Os cuneiforme intermedium