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- location: lies laterally in the midfoot
- articulations: proximally with the calcaneus, medially with the lateral cuneiform and navicular, and distally with the fourth and fifth metatarsals
- blood supply: lateral tarsal artery, a branch of the dorsalis pedis
The cuboid is a wedge shaped bone, being widest at its medial edge and narrow at its lateral edge. It has three main articular surfaces: anterior, medial and posterior.
Its anterior surface is separated into two facets by a vertical ridge, allowing articulation of the base of the fourth and fifth metatarsal.
- proximally/posteriorly with the calcaneus at the calcaneocuboid joint
- distally/anteriorly with the fourth and fifth metatarsals
- medially with the lateral cuneiform and navicular
- long plantar ligament: connects the calcaneus and cuboid
- short plantar ligament: connects the calcaneus and cuboid
- interosseous ligaments
- lateral longitudinal arch: consists of calcaneus, cuboid and fourth and fifth metatarsal bones, from posterior to anterior
- transverse arch: consists of the bases of the metatarsal bones, cuboid and all cuneiforms
An additional os vesalianum bone may arise between the fifth metatarsal and cuboid.
The cuboid ossifies in cartilage at the ninth month.