Fibula

The fibula is the thinner of the two long bones in your lower leg, running alongside the shinbone. It helps support the ankle and muscles but doesn’t carry as much weight as the main shinbone.

It comes from Latin “fibula,” meaning “clasp” or “brooch,” which was a pin used to fasten clothing. The bone was named this because it was thought to resemble a clasp lying next to the main leg bone.