Rest. Keep the injured area supported and avoid using it for 48 to 72 hours.
Ice. Apply ice to the injured area for 20 minutes every two hours for the first 48 to 72 hours.
Compression. Apply a firm elastic bandage over the injured area, extending above and below it.
Elevation. Raise the injured area above the level of the heart at all times.
Referral. See a doctor as soon as possible.