First, congratulations on losing 70 pounds. That is a tremendous accomplishment and reflects a great deal of dedication. Loose skin after significant weight loss is very common, and it's understandable that you're looking for the best way to address it. Based on your description, it sounds like your concerns extend beyond the upper arms alone. You're also noticing excess skin in the armpit, the side of the chest near the breasts, and the upper back. When these areas are involved together, it's important to think of them as one continuous contour rather than treating each area separately. For the arms, the type of lift depends on the amount and location of excess skin: A mini arm lift, with an incision hidden in the armpit, is best for people with only a small amount of loose skin confined to the upper arm near the axilla. A standard brachioplasty (full arm lift), with an incision extending down the inner arm, is usually recommended when there is more extensive skin laxity. It provides much more dramatic tightening but does leave a longer scar. If the loose skin continues from the armpit onto the side of the chest or toward the breast, many surgeons consider extending the procedure into a brachioplasty with lateral chest extension. This allows both the arm and the excess skin along the side of the chest to be addressed in one continuous contour, rather than improving one area while leaving the adjacent tissue unchanged. For concerns involving the upper back or "back rolls," a separate upper body lift or upper back lift may be appropriate if there is significant excess skin in that region. These procedures are designed specifically for patients who have experienced major weight loss and often provide a much more balanced overall result. One thing I always emphasize is that the "best" operation isn't necessarily the one with the shortest scar. In body contouring after weight loss, the trade-off is usually more skin removal in exchange for a longer scar. Most patients find that the improvement in contour outweighs the visibility of the scar, especially as scars continue to mature over the course of a year or more. If your weight has been stable for several months and you're close to your long-term goal, this is generally the ideal time to begin considering body contouring procedures. Stable weight helps maximize the longevity of your results. From your description, I suspect that a mini arm lift alone would likely not address all of your concerns. Because you're bothered by the arms, armpits, lateral chest, and back, a more comprehensive body contouring plan would probably provide the most harmonious outcome. The exact surgical approach would ultimately depend on how much excess skin is present and how it is distributed, but thinking about these areas together rather than individually usually leads to the most satisfying and natural-looking result.