Hi, thanks for writing to HCM.
If you are able to carry on your regular activities normally, then a bony injury
From the above description, I suspect that the swelling in the ankle & foot could be of inflammatory origin.
Continue using antiinflammatory medicines as advised by your treating doctor. Apart from that follow the below mentioned measures -
* Rest to the injured part and dont involve in activities which puts additional strain on the injured tissues.
* Ice packing should be applied for about 20 minutes once in every 2 hours.
* Use elastic compression bandage around the swollen area
* Elevation of the limb
Hope this information is helpful. Good day