The most common procedure is something that involves an "inverted T" or an "anchor" scar,one that goes around the areola, goes straight down, and then underneath. It's a lot of scar. Advocates - and I am one - feel that it gives the best shape, tightens the breast most completely and thoroughly, and because tension is distributed evenly along the length of the scars, that though long, the quality of the scar is likely to be good. Critics think that the benefits of the shape do not justify the length of the scar, and that this technique is prone to something called "bottoming out", which is when the lower part of the breast stretches.
Gaining in popularity is something called the vertical lift, which involves a scar around the areola and then straight down the breast, eliminating the underneath scar. Proponents think that the shape is good, that the breast maintains a lot of projection over time without bottoming out, and that the underneath scar is avoided. I believe that many of these breasts look overly projecting to my taste, and that bottoming out can be minimized with the inverted T style pattern. I also feel that the underneath scar is rarely seen, and that the scars that are seen - around the areola and going straight down, seem relatively more visible with this technique since it requires some bunching up of the skin during closure. Understand that some of the best surgeons in the world argue with one another about this issue at meetings all the time!