Because your fibula doesn't bear all your weight, it isn't as serious as a broken tibia. But a fibula fracture is still serious. So, if you think you've broken your fibula, get it looked at right ...

“The posterior tibialis is a muscle that originates on the back, or posterior, part of the tibia and fibula (your lower leg bones), up close to your knee,” explains Cathlin Fitzgerald, D.P.T ...