Cuneiform bones

Cuneiform bones; Cuneiform
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:

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]
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.
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]

Bones of the right foot. Plantar Surface.
Skeleton of foot. Medial aspect.
Skeleton of foot. Lateral aspect.
Oblique section of left intertarsal and tarsometatarsal articulations, showing the synovial cavities.
Bones of foot
Cuneiform. Superior view.
Cuneiform. Superior view.

↑ 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.
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.

upper extremity	head fovea neck greater trochanter fossa lesser trochanter intertrochanteric line intertrochanteric crest quadrate tubercle
shaft	linea aspera upper medial: merges with intertrochanteric line upper intermediate: pectineal line upper lateral: gluteal tuberosity / third trochanter
lower extremity	adductor tubercle patellar surface epicondyles lateral medial condyles lateral medial intercondylar fossa

upper extremity	Gerdy's tubercle condyles lateral medial intercondylar area posterior anterior intercondylar eminence lateral tubercle medial tubercle
shaft	tuberosity soleal line
lower extremity	medial malleolus Anterior colliculus Posterior colliculus fibular notch

Other

Tarsus	calcaneus sustentaculum tali calcaneal tubercle talus navicular cuboid cuneiform medial intermediate lateral
Metatarsals	1st 2nd 3rd 4th 5th
Other	Phalanges

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.