Lateral cuneiform
Last revised by Daniel J Bell ◉ on 01 Apr 2021
Citation, DOI & article data
Citation:
Hacking C, Bell D, Foster T, et al. Lateral cuneiform. Reference article, Radiopaedia.org (Accessed on 05 Feb 2023) https://doi.org/10.53347/rID-41547
rID:
41547
Article created:
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9 times by 6 users - see full revision history
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Synonyms:
- Lateral cuneiform bones
- Lateral cuneiform bone
- Third cuneiform
- External cuneiform
- Cuneiforme lateral
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. 2008;97 (6): 483-5. Pubmed citation
- 2. Gray's Anatomy. Churchill Livingstone. (2011) ISBN:0443066841. Read it at Google Books - Find it at Amazon
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