Metatarsals

Definition

Metatarsals are the five long bones located in the foot between the tarsal bones and the phalanges. They play a critical role in weight-bearing and locomotion.

5 Must Know Facts For Your Next Test

1. The metatarsals are numbered I to V, starting from the medial (big toe) side of the foot to the lateral side.
2. Each metatarsal bone has a head, shaft, and base, which articulate with other bones in the foot.
3. The first metatarsal is typically shorter and thicker than the others because it bears more weight during walking and running.
4. Metatarsal fractures are common injuries often caused by trauma or repetitive stress.
5. The metatarsals form part of the arches of the foot, contributing to its structure and function.

Review Questions

• How are the metatarsal bones numbered in relation to their position in the foot?
• What are the three main parts of a metatarsal bone?
• Why is the first metatarsal different from the other four?

Related terms

Tarsals: Seven small bones that make up the posterior part of the foot (ankle region) connecting with metatarsals.

Phalanges: Bones that make up the toes, with each toe having three phalanges except for the big toe which has two.

Arches of Foot: Curved structures formed by tarsals and metatarsals that provide support and distribute body weight during movement.