Would lipo make the banding/crease go away? will it make my arms sag? (Photo)

The picture of the arm band and the arm band you describe are fairly common in my practice of massive weight-loss patients.  In most cases, I believe these arm bands are congenital. That means you were probably born with this arm band.When I consult with massive weight loss patients for an arm lift or arm reduction, I look for these arm bands. During arm lift surgery, I spent a significant amount of time disrupting this arm band with the liposuction cannula. In addition, I spend a significant amount of time removing the fat on both sides of the arm scar band. Arm liposuction and the removal of excess arm skin and fat usually solves the arm band problem.I would advise you have aggressive arm liposuction around the arm scar band. I doubt you will need a repeat arm lift after this aggressive arm liposuction.Good luck. 

No in my over the internet opinion. I would offer rigotomies with micro fat grafts to try to eliminate the "banding"... 

Thank you for your pictures. This is the most unusual place to have a crease. It may have represented a long pleat at the time of closure of your incision. Liposuction may help decrease the appearance of the crease if it is used judiciously. I would consult multiple consultations from board-certified plastic surgeons.  Good luck.Earl Stephenson Jr MD DDS FACS