Breast implant placement can occur in one of two locations. The left photo shows placement below the breast gland (sub-glandular). The right photo shows placement below the breast gland and pectoralis major muscle (sub-muscular). In most patients, I prefer to place implants in the sub-muscular position. There are several reasons for this:
1) There is more of your own tissue between the implant and the external environment.
2) The implants appear more natural, especially in the upper poles.
3) There is a reduced incidence of implant infection, extrusion & capsular contracture.
4) There is a reduced incidence of visible rippling of the implant.