Intermediate cuneiform (left) (Os cuneiforme intermedium)
Educational content only — not medical advice.
Anatomy
The smallest and shortest cuneiform, mortised between its medial and lateral brothers to lock the second metatarsal column — the mechanical keystone of the transverse arch. This is the left member of the pair.
Clinical notes
Second-metatarsal subluxation (Lisfranc) unlocks this mortise and threatens the transverse arch; weight-bearing X-rays are mandatory because subtle displacement hides when unweighted.
Related structures
Educational references
FAQ
What is the role of the Intermediate cuneiform (left)?
The smallest and shortest cuneiform, mortised between its medial and lateral brothers to lock the second metatarsal column — the mechanical keystone of the transverse arch. This is the left member of the pair.
Why is the Intermediate cuneiform (left) clinically important?
Second-metatarsal subluxation (Lisfranc) unlocks this mortise and threatens the transverse arch; weight-bearing X-rays are mandatory because subtle displacement hides when unweighted.
Source & license
Derived from Z-Anatomy (Gauthier Kervyn et al.), CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/); upstream geometry from BodyParts3D, © The Database Center for Life Science. license details