| Cuboid bone | |
|---|---|
 The left cuboid. Antero-medial view. | |
 The left cuboid. Postero-lateral view | |
| Details | |
| Articulations | Calcaneocuboid,cuboideonavicular andcuneocuboid articulation |
| Identifiers | |
| Latin | os cuboideum |
| TA98 | A02.5.16.001 |
| TA2 | 1489 |
| FMA | 24527 |
| Anatomical terms of bone | |
In thehuman body, thecuboidbone is one of the seventarsal bones of thefoot.
The cuboid bone is the most lateral of the bones in thedistal row of thetarsus. It is roughly cubical in shape, and presents a prominence in its inferior (or plantar) surface, the tuberosity of the cuboid. The bone provides a groove where the tendon of theperoneus longus muscle passes to reach its insertion in thefirst metatarsal andmedial cuneiform bones.[1]
Thedorsal surface, directed upward and lateralward, is rough, for the attachment of ligaments.
Theplantar surface presents in front a deep groove, the peroneal sulcus, which runs obliquely forward and medialward; it lodges the tendon of theperoneus longus, and is bounded behind by a prominent ridge, to which the long plantar ligament is attached.
The ridge ends laterally in an eminence, thetuberosity, the surface of which presents an oval facet; on this facet glides the sesamoid bone or cartilage frequently found in the tendon of the peroneus longus. The surface of bone behind the groove is rough, for the attachment of the plantarcalcaneocuboid ligament, a few fibers of theflexor hallucis brevis, and a fasciculus from the tendon of thetibialis posterior.
Thelateral surface presents a deep notch formed by the commencement of the peroneal sulcus.
Theposterior surface is smooth, triangular, and concavo-convex, for articulation with the anterior surface of thecalcaneus (thecalcaneocuboid joint); its infero-medial angle projects backward as a process which underlies and supports the anterior end of the calcaneus.
Theanterior surface, of smaller size, but also irregularly triangular, is divided by a vertical ridge into two facets, forming the fourth and fifthtarsometatarsal joints: the medial facet, quadrilateral in form, articulates with the fourth metatarsal; the lateral, larger and more triangular, articulates with the fifth.
Themedial surface is broad, irregularly quadrilateral, and presents at its middle and upper part a smooth oval facet, for articulation with thethird cuneiform; and behind this (occasionally) a smaller facet, for articulation with thenavicular bone; it is rough in the rest of its extent, for the attachment of strong interosseous ligaments.
Only one muscle is attached to the cuboid bone; thetibialis posterior. The tibialis posterior inserts to the under surface of the cuboid bone.[2] While the flexor hallucis brevis arises, by a pointed tendinous process, from the medial part of the under surface of the cuboid bone, from the contiguous portion of thelateral cuneiform bone, and from the prolongation of the tendon of the tibialis posterior.[citation needed]
In a condition known ascuboid syndrome, the cuboid can be subluxated downward causing a swollen kind of ache along the central portion of the lateral border of the foot.
This article incorporates text in thepublic domain frompage 269 of the 20th edition ofGray's Anatomy(1918)
Media related toCuboid bone at Wikimedia Commons
