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Home › Body Atlas › Bones › Intermediate Cuneiform
Bone Foot & Ankle

Intermediate Cuneiform

os cuneiforme intermedium

The intermediate cuneiform is the smallest of the three cuneiforms, wedged between the medial and lateral cuneiforms and articulating with the second metatarsal, its tight, keystone-like position makes it the most stable of the Lisfranc joint bones.

Anatomical Data

Structure & Landmarks

Articulations
  • Navicular posteriorly
  • Second metatarsal anteriorly
  • Medial and lateral cuneiforms
Landmarks
  • Recessed anterior surface creating the keystone socket for second metatarsal
OssificationEndochondral ossification from a single centre appearing at age 2 to 3.
Clinical Relevance

Clinical Notes

The intermediate cuneiform is the smallest of the three cuneiforms and is recessed posterior to the medial and lateral cuneiforms, forming the socket that locks the second metatarsal base and creates the inherently stable central column of the Lisfranc joint. This recessed architecture explains why the second metatarsal requires the Lisfranc ligament to lock it medially. There is no interosseous ligament between the first and second metatarsals.

Pathology

Common Injuries & Conditions

Lisfranc Injury

The intermediate cuneiform forms part of the tarsometatarsal joint complex and can be involved in Lisfranc fracture-dislocations.

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