 Medial view of lateral cuneiform |
 Lateral view of lateral cuneiform |
The lateral cuneiform is also called the third cuneiform (and on rare occasions, the external cuneiform). It is a triangular shape with the base being dorsal and apex pointing in a plantar direction. Part of the flexor hallucis brevis muscle’s proximal attachment originates from the plantar surface of this bone. A slip from the posterior tibial tendon usually inserts into the plantar medial aspect of the bone. Latin names for this bone are Os cuneiforme laterale or os cuneiforme tertium. In French, it is the Cunéiforme latéral.
Only visible on a dorsiplantar x-ray.
Ossification: occurs from one center that appears during the first year of life
Relationships: Medial side: Intermediate cuneiform; Lateral side: Cuboid; Anteriorly: Third metatarsal; Posteriorly: Navicular
Attachments: Plantarly: Flexor hallucis brevis and posterior tibial tendon
Nerve Supply: Deep peroneal and lateral plantar nerves
Blood Supply: Mostly from the dorsal arterial network
Related Topics:
Anatomy books | Cuneiform Stress fracture | Buschke disease | X-ray of cuneiforms
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