The inframammary fold is the anatomical line where the lower breast mound meets the chest wall. This is the area immediately under the breast, also known as the breast seam, inframammary seam or inframammary crease. This bodily region is used as an entry point during many cosmetic breast surgery procedures.
In human anatomy, the inframammary fold (IMF), inframammary crease or inframammary line is the natural lower boundary of the breast, the place where the breast and the chest meet. The choice of the term depends on the prominence of the feature. It is also sometimes called the inframammary ligament.
Inframammary incisions are made in the fold where the lower part of the breast meets the chest wall. From there, a saline or silicone implant can be inserted below or above the muscle. Many patients prefer this type of incision—especially those whose breasts hang a bit—because the scar is easily hidden by a bra or bikini (or the breast itself).
The inframammary crease is the border at the bottom of the breast, where the mammary tissue meets the lower chest wall. This type of incision has become far less popular over the years, due to several distinct disadvantages, including visible breast scarring.