There are two anatomical locations for implant placement in the breast. The implant can be placed below the muscle or placed above the muscle of the chest. It is believed that as the pectoralis major muscle basically presses the implant during daily activities and movement, the implant is compressed and released, breaking any scar that is forming and making capsular contracture less likely. In other words, the muscle massages the implant. Another theory is that the space created under the muscle is less likely to create a contracture than the pocket above the muscle because of the vascularity of the muscle. In addition, some believe that because the muscle is more vascular, it is less prone to infection.
When you talk to your surgeon, discuss your concerns about capsular contraction, where your implant will be located, and how to decrease the likelihood of having a capsular contracture. In my practice, most implants are placed under the muscle, since this decreases the risk of not only capsular contracture, but also other complications like implant rippling and implant palpability