Describe the features of a broken ankle.?

Agree. Bad sprains and fracture can be very similar in presentation. Get it looked at!
Let us try. Symptoms of an ankle fracture can be similar to those of ankle sprains (pain), though typically they are often more severe by comparison. It is exceedingly rare for the ankle joint to dislocate in the presence of ligamentous injury alone. Ecchymosis (brusing), or there may be an abnormal position, abnormal motion, or lack of motion..