Only One Breast Has Dropped a Year After Augmentation

You mentioned the breast implants dropping.  This is typically a statement used for submuscular / below the muscle implants.  They appear to high in the beginning with tightness below the nipple.  The drop occurs over several months time and around 6 months you will have a general idea of their final look.  They do look like large implants and depending on the width may have to be placed above the muscle.  Bottoming out occurs due to the weight of the implant and gravity that stretch the thin skin of the lower portion of your breast.  This gives the appearance of the nipple being to high and a long distance from the inframammary fold to the nipple.  

With the assumption that these are below the muscle, a difference in the release of the muscle can cause such a difference to occur.  The left breast in the photo appears to have a higher and tighter fold.  This could represent less of the muscle being released on that side.  A quick check by flexing your pectoralis muscle may show a difference.  Stand in front of the mirror with hands on hips and contract your chest muscle.  Any uneven movement of the implant would be a clue as to the reason for your problem.  There are many other factors involved and you should discuss this with the original surgeon if at all possible.  That is the individual who should hopefully know you best.

From your photo you have large implants which are heavier and more prone to bottoming out.  The fact that this wasn't the case in the beginning means that this is not your doctor's fault, just how your body healed.  Your chest activity may have contributed to this.  It can be repaired but it is not that easy and requires another operation and costs to you.