Cuboid

Cuboid

The Cuboid is one of the seven tarsal bones located in the foot. It is situated on the lateral (outer) side of the foot, in front of the calcaneus, behind the fourth and fifth metatarsal bones, and underneath the navicular bone.

Structure

The cuboid bone is cube-shaped and presents six surfaces. It is the fifth largest bone in the foot and plays a crucial role in stabilizing the lateral column of the foot.

Surfaces

• Dorsal surface: This surface is rough for the attachment of ligaments.
• Plantar surface: This surface contains a groove for the tendon of the peroneus longus.
• Medial surface: This surface is broad and triangular, and articulates with the third cuneiform, and sometimes with the navicular.
• Lateral surface: This surface is smaller and of a quadrilateral form.
• Proximal surface: This surface articulates with the calcaneus.
• Distal surface: This surface articulates with the fourth and fifth metatarsal bones.

Function

The cuboid bone helps to stabilize the outer foot and allows for the foot to bear weight. It also plays a role in the movement of the foot, particularly in walking and running.

Clinical significance

Injuries to the cuboid bone, such as fractures or dislocations, can cause significant pain and disability. These injuries are often caused by trauma to the foot, such as a fall or a direct blow. Treatment typically involves immobilization of the foot and may require surgery in severe cases.

See also

• Foot
• Tarsal bones
• Calcaneus
• Metatarsal bones
• Navicular bone

References

Cuboid Resources
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