What is the best non-surgical option for treating cankles? SculpSure?

To get the contour back to your ankles, Sculpsure with a combination of radio-frequency should be successful. It is important to find a dedicated Sculpsure specialist for this. Unfortunately many plastic surgeons use Sculpsure as a "back burner" procedures preferring to focus on surgery. They often leave the procedure to technicians.There are clearly important techniques when using Sculpsure so seek out a center with extensive experience. 

Treating your "cankles" with SculpSure is considered "off label", meaning it is not yet received FDA approval. But many surgeons are having good results. However, the only way to know for certain whether or not it would be effective in your case is for you to be assessed in person by a board certified plastic surgeon with a lot of SculpSure experience. Best of luck.