What can be done about this ridge from my tummy tuck scar? (Photo)

The slight irregularity or indentation from the tummy tuck scar is not uncommon when the scar is placed higher in the pubic area. I generally like to place the scar very low in the pubic area in order to prevent this type of problem and allow the scar to be concealed even if you wear low riding lingerie or bikini bottoms. Liposuction above the scar could be performed to even the contour. Please select a plastic surgeon board certified by the American Board of Plastic Surgery and preferably a member of the American Society of Aesthetic Plastic Surgeons, (ASAPS).

A scar revision would probably be best for you.  Speak to your Plastic Surgeon about your concerns.  Usually a scar revision can be done in-office under local anesthesia. Skin and fat should be removed in your case, in order to create a flatter appearance.  I hope this was helpful to you.  
Best Wishes,
-Dr. B.