Breast augmentation procedures are best sized by determining the base diameter of the breast. The base diameter of the breast is the distance between two points on the chest wall, one point where the breast begins medially and the other point where the breast ends laterally on the chest.
Once the patient has determined the size implant they would like, then we choose an implant profile. The profile of the implant determines how the implant proportions are designed. Patients often believe that the profile of the implant is where on the chest wall the implant will end up. This is not true. The profile of the implant determines how the implant is proportioned. High profile implants have the narrowest base diameter with the most projection while the others have smaller degrees of projection and a wider base diameter.