A cuboid bone is one of the seven tarsal bones located in the foot, specifically on the lateral (outer) side. It's a cube-shaped bone that plays a crucial role in the foot's structure and function.
Location and Function
- Location: The cuboid bone sits in the distal row of the tarsus, towards the outside of your foot. It's positioned between the calcaneus (heel bone) and the fourth and fifth metatarsals (long bones of the foot).
- Function: It contributes to the stability of the foot, helps transmit weight, and provides attachment points for various ligaments and tendons. The tuberosity of the cuboid, a prominence on its plantar surface, further supports these functions. Essentially, it helps to create the arch on the outside of your foot.
Key Features
- Shape: As the name suggests, it's roughly cubical in shape.
- Tuberosity: A prominent bump on the underside (plantar surface) of the bone.
- Articulation: The cuboid articulates (forms joints) with several other bones:
- Calcaneus (heel bone)
- Lateral cuneiform
- Navicular (occasionally)
- Fourth metatarsal
- Fifth metatarsal
Clinical Significance
Injuries to the cuboid bone, such as fractures or cuboid syndrome (a disruption of the joint between the cuboid and calcaneus), can cause lateral foot pain and affect mobility. Proper diagnosis and treatment are essential for recovery.
