Lateral cuneiform
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At the time the article was created Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosuresAt the time the article was last revised Arlene Campos had no financial relationships to ineligible companies to disclose.
View Arlene Campos's current disclosures- Third cuneiform
- External cuneiform
- Cuneiforme lateral
- Lateral cuneiform bone
- Lateral cuneiform bones
The lateral cuneiform is one of the tarsal bones located between the intermediate cuneiform and cuboid bones.
On this page:
Gross anatomy
Osteology
The lateral cuneiform is a wedge-shaped bone. It is smaller than the medial cuneiform and larger than the intermediate cuneiform. It lies edge downward, between the intermediate cuneiform and cuboid.
Articulations
anteriorly with the 2nd and 3rd metatarsals
posteriorly with the navicular
laterally with the cuboid
medially with the intermediate cuneiform
Attachments
Musculotendinous
flexor hallucis brevis: the proximal part of the lateral cuneiform undersurface gives rise to this muscle
tibialis posterior: one of its fibrous terminal tendon slips attaches to the narrow plantar surface
Ligamentous
plantar interosseous ligaments: arise from the lower part of the lateral cuneiform, forming part of the transverse arch of the foot, these are mainly cuneocuboid ligament and intercuneiform ligaments which help gliding and rotation in pedal pronation or supination and also when the forefoot is stressed, as in initial thrust of running and jumping
Relations
anterior: 2nd and 3rd metatarsal
posterior: navicular
lateral: cuboid
medial: intermediate cuneiform
Arterial supply
via the lateral tarsal artery, a continuing branch of the dorsalis pedis
Development
Ossification
The lateral cuneiform ossifies in the first year of life.
Related pathology
isolated lateral cuneiform fracture is rare, but has been documented in the literature 1
References
- 1. Shah K & Odgaard A. Fracture of the Lateral Cuneiform Only: A Rare Foot Injury. J Am Podiatr Med Assoc. 2007;97(6):483-5. doi:10.7547/0970483 - Pubmed
- 2. Susan Standring. Gray's Anatomy. (2008) ISBN: 9780443066849 - Google Books
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