Uniboob; is there anything I can do to prevent this?

#Symmastia is a condition which can occur when the implants are too close together. Patients often refer to this as a “uniboob.” Occasionally, the space or pocket for the breast implant is created towards the center, or the tissue stretches, forcing  the implants to fall too much towards the center of the breasts.  Your procedures should always be performed by a #PlasticSurgeon who is board-certified and has a great deal of experience specializing in cosmetic #surgery. You will then greatly improve your chances of getting the result you desire, and, without the need for a revision surgery. It is suggested that you look at before and after photos of the surgeons actual patients, and read patient reviews. Gathering all of this information will help you make a well-informed decision.

It does not look like symmastia according to your pictures but you should consult with your surgeon to be sure. Symmastia is a condition which can occur when the implants are too close together. Patients often refer to this as a “uniboob.” This can occur for the same reasons as displacement, but in this case the pocket(s) is/are too far towards the center.Correction of this problem may involve using different implants such as textured, a smaller size, or a smaller base and placing the implants in a new pocket. On occasion, this may require surgery in more than one stage to allow the tissues to heal and then place the implants. If the implants have been placed above the muscle, converting them under the muscle frequently will help and, again, the use of a dermal substitute may be required for additional support if the tissues are thin. The techniques of capsulorrhaphy and neopectoral pockets may apply here as well.

Thank you for your question. The best thing you can do is find a board-certified plastic surgeon that you are comfortable with and confident that they will be able to provide you with your desired results. Symmastia most commonly occurs if an implant that is too large for your frame is used and too much dissection is made between the breasts. This is very easy to avoid with the appropriate implant selection and proper surgical technique. Best of luck, Dr. Kludt

Thanks for your question. 
First of all, synmastia is not a common occurrence.  Secondly, it is important that you not go too
big.  If you go beyond the diameter of
your breasts extensively, then you have a higher chance of having this happen
because basically the surgeon has to open all the tissue planes in order to be
able to accommodate the size of the implant. 
You can avoid this by having a consultation with a Board Certified
Plastic Surgeon who does proper measurements and can recommend an implant size
that will safely be able to fit your frame. 
I hope this is helpful.  Best of
luck!

takes judgment by your surgeon, choosing smaller sizes, and careful dissection of your pocket.  If you have a frame that can handle the 400 cc dimensions, you should be fine.  If you are very flat, be cautious with the larger sizes as it can sometimes 'tent' the skin upwards if the mounds are too close to each other and result in symmastia still.  And avoid ultrahigh profile implants for sure.