As the nipple does not lie below the infra-mammary fold this is not actually ptosis. The majority of the breast parenchyma has fallen below the level of the fold. The majority of the breast volume is at the bottom of the breast.
The surgeon will decide, based on the severity of the Ptosis, which mastopexy procedure will produce the best results. It is important to bear in mind that an implant alone will not fix severe ptosis. It will make the breast bigger and fuller but will not lift or reduce the ptosis of the breast.