Cuneiform bones

Cuneiform bones

Bones of the right foot. Dorsal surface.
Identifiers
FMA 24517

Anatomical terms of bone

There are three cuneiform bones in the human foot:

They are located between the navicular bone and the first, second and third metatarsal bones and are medial to the cuboid bone.[1]

Structure

There are three cuneiform bones:

  1. The medial cuneiform (also known as first cuneiform) is the largest of the cuneiforms. It is situated at the medial side of the foot, anterior to the navicular bone and posterior to the base of the first metatarsal. Lateral to it is the intermediate cuneiform. It articulates with four bones: the navicular, second cuneiform, and first and second metatarsals. The tibialis anterior and fibularis longus muscle inserts at the medial cuneiform bone.[2]
  2. The intermediate cuneiform (second cuneiform or middle cuneiform) is shaped like a wedge, the thin end pointing downwards. The intermediate cuneiform is situated between the other two cuneiform bones (the medial and lateral cuneiforms), and articulates with the navicular posteriorly, the second metatarsal anteriorly and with the other cuneiforms on either side.
  3. The lateral cuneiform (also known as third cuneiform or external cuneiform) intermediate in size between the other two cuneiform bones, is also wedge-shaped, the base being uppermost. It occupies the center of the front row of the tarsal bones, between the intermediate cuneiform medially, the cuboid laterally, the navicular posteriorly and the third metatarsal in front. The tibialis posterior inserts at the medial cuneiform, while the flexor hallucis brevis originates from it.[2]

Muscle attachments

Muscle Direction Attachment[2]
Tibialis anterior Insertion Medial cuneiform
Fibularis longus Insertion Medial cuneiform
Tibialis posterior Insertion Lateral cuneiform
Flexor hallucis brevis Origin Lateral cuneiform

Additional images

See also

This article uses anatomical terminology; for an overview, see Anatomical terminology.

References

  1. Bojsen-Møller, Finn; Simonsen, Erik B.; Tranum-Jensen, Jørgen (2001). Bevægeapparatets anatomi [Anatomy of the Locomotive Apparatus] (in Danish) (12th ed.). p. 245. ISBN 978-87-628-0307-7.
  2. 1 2 3 Bojsen-Møller, Finn; Simonsen, Erik B.; Tranum-Jensen, Jørgen (2001). Bevægeapparatets anatomi [Anatomy of the Locomotive Apparatus] (in Danish) (12th ed.). pp. 364–367. ISBN 978-87-628-0307-7.
Wikimedia Commons has media related to Cuneiform bones.
This article is issued from Wikipedia - version of the Saturday, January 30, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.