Fibula

Definition

The fibula is the smaller of the two bones located in the lower leg, alongside the tibia. It provides support for muscles and helps stabilize the ankle and lower leg.

5 Must Know Facts For Your Next Test

1. The fibula is not a weight-bearing bone; it primarily serves as an attachment point for muscles.
2. It is thinner and longer than the tibia, running parallel to it.
3. The fibula contributes to the formation of both the knee joint at its proximal end and the ankle joint at its distal end.
4. Injuries to the fibula, such as fractures, can affect balance and mobility due to its role in muscle attachment.
5. The lateral malleolus is formed by the distal end of the fibula and is important for ankle stability.

Review Questions

• What are the main functions of the fibula in the lower leg?
• How does a fracture in the fibula affect overall leg function?
• What anatomical structures does the distal end of the fibula contribute to forming?

Related terms

tibia: The larger, weight-bearing bone located next to the fibula in the lower leg.

lateral malleolus: The bony prominence on each side of your ankle formed by the distal end of both tibia and fibula.

ankle joint: A hinge-type joint connecting the foot with the leg, involving both tibia and fibula bones along with several ligaments.