Will a Fleur de lis tummy tuck resolve the excess skin issue on my back as well as my tummy?

Tummy tuck of any type without any extension to the back will not significantly impact the back.Kenneth Hughes, MDLos Angeles, CA

A typical full abdominoplasty is a powerful procedure that can flatten and remove excess skin and fat from both above and below the belly button and tighten the abdominal muscles. For fuller figured patients or for patients after massive weight loss, the bikini line incision is often extended over the hips and towards the back to as an extended abdominoplasty. In some cases the incision is carried all the way around the back to take up excess tissue around the entire waist (a belt lipectomy / body lift).
For massive weight loss patients with excess upper flank and back skin, an additional procedure is often needed to remove this tissue through an incision hidden in the bra line. Sometimes liposuction is added to for better contouring.
See the link below for more information.A detailed examination will help delineate the best surgical option. Consultation with a surgeon certified by the American Board of Plastic Surgery would be the next best step.

An abdominoplasty will not address the excess skin on your back.  You cannot compare yourself to another person whose starting point may have been quite different from yours. See a board certified plastic surgeon who can discuss your options.