What is the best treatment for swollen ankle?

Condition analysis:
You've just taken a knock, that's all, relax. You've bruised it and it's showing a little swelling, ice-pack, raise it up and don't put too much weight on it for a day or so.
It should be fine.

Instructions:
Applying Ice: You should apply ice as soon as you suspect fractured foot bones. Applying either an ice pack or crushed ice to the affected area helps reduce swelling. Crushed ice conforms to areas easier than ice packs. Avoid putting ice directly on your skin. Wrapping the ice in a towel prior to applying it to your foot will help prevent ice burn. Do not apply ice for longer than 20 minutes at a time. Use ice as a home remedy throughout the day.