After a foot injury, ice can help relieve pain, reduce inflammation, and speed up your healing process. However, icing properly to ensure that you do not damage surrounding muscle tissues is important. For example, be sure not to ice your injury for too long. Apply ice for one to three days after an injury, for 15 minutes, every two to three hours to relieve pain and limit bruising.*

Appropriate ice packs come in many forms, from a bag of frozen peas to instant cold packs found at your local drugstore. In addition to applying ice, try to rest and elevate your injured foot as much as possible.

*http://orthopedics.about.com/cs/sprainsstrains/ht/iceinjury.htm
Photo | Glen Bowman | Glass Ankle in Ice | Used under a Creative Commons Attribution Share-alike license