The fibula is crucial for the structure and stability of the lower leg. It forms the structure of the calf and the outer lower leg, supports the ankle, and contributes to the stability of knee ligaments. The fibula (pl. :

It is the smaller of the two bones and, in proportion to its length, the Ò€¦ Fibula, outer of two bones of the lower leg or hind limb. In humans the head of the fibula is joined to the head of the inner bone, the tibia, by ligaments and does not form part of the knee. The fibula is slim Ò€¦ The fibula doesn't so much hold you up; Instead it holds everything in your lower leg and ankle together. It supports the tibia and stabilizes the ankle.

The fibula doesn't so much hold you up; Instead it holds everything in your lower leg and ankle together. It supports the tibia and stabilizes the ankle. It also provides a place for muscles to attach.