I'm sorry that happened to you! Injuries stink!! When you get the cast off try doing epsom salt baths. Fill a tub with water as hot as you can stand it...add about 1.5 cups of the salts. You can buy at Walgreens. They are cheap. Anyway...soak about 15 minutes. Dump out the hot water and switch to as cold as you can for as long as you can stand. It's the bomb.dot.com. another great trick are homemade ice packs that never freeze solid, get way colder than store bought ones and are reusable and last a lot longer. Get a few big Ziplocs. 1 part rubbing alcohol to 3 parts water. They never harden so will bend around your ankle perfectly. That's the best advice I've given all day. Take what you like and leave the rest!!