Hi Joy,
I NEVER place implants above the muscle because I know what the outcome will be in a couple of years - low/saggy 'rock in a sock' look. It's not pretty. Placement of implants above the muscle have only the skin for support. Every woman knows skin is simply not enough to hold anything up. Yes, breasts look great the first couple of years, but quickly stretch the skin and tissues to create a problem that is very difficult to correct. Submuscular placement at least provides somewhat of a shelf for the implant to rest upon. FYI, the larger the implant, the more likely this shelf is to fail. That being said, there is a new technique called the Mini Ultimate Breast Lift that lifts and drapes your existing breast tissue directly over a small submuscular implant to create a perky, round, and natural appearance. Internal straps are created to maximize the lift and secure it for longevity.
I hope this helps,
Dr. H