Is True the You Loose 25-50cc when You Go Under the Muscle?

Im 5'6 my weight 140 im going under? Is true the you loose 25-50cc when you go under the muscle.?

Doctor Answers 5

Size decrease following sub muscular implant placement.

Thanks for the question.  It is true that the same size implants will appear smaller when they are placed under the muscle when compared to how they will look on top of the muscle.  The muscle will decrease the overall projection of the implants.  You should talk to your doctor to decide the pluses and minuses of both implant positions prior to proceeding with the surgery.

Phoenix Plastic Surgeon
4.5 out of 5 stars 32 reviews

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Breast implants "under the muscle"

The confusion here is between volume as measured in cc's and the effect of that volume. The volume of the implant is not changed whether it is above or below the pectoralis muscle, the comments about compression notwithstanding. 

If you put your foot under a sheet in bed and look at it and then compare that to your same foot under a blanket, the foot under the sheet will look bigger even if the foot is the same size. 

If you put the same breast implant in an external bra, behind the breast but above the muscle, or behind the pectoralis muscle (subpectoral), it will have the same volume in cc's but the effect will be different. This is why external sizers do not work well for determining resulting breast size and why a breast implant will be more obvious above the muscle but will look bigger than the same volume implant padded and protected and blended in under the chest muscle behind the breast. 

Proper sizing of implants today involves knowing what size/dimensions/volume will fit properly behind the breast and under the muscle and what effect that will have. 


Scott L. Replogle, MD
Boulder Plastic Surgeon
4.0 out of 5 stars 1 review

Does a subpectoral implant change the size

A breast implant is filled with an almost non compressible substance(at the pressure we are talking about).  When you place the implant behind the muscle there might be more pressure on the implant.  But its going to act like most fluid, and follow the path of least resistance.  That is why there is more distortion immediately post op from a behind the muscle implant.  It might look a little bit smaller then an implant in front of the muscle. This is due to camouflage effect of the muscle over the implant.  But rest assured you are getting the full implant that you paid for.


Good luck, and thank you for question.




Anire Okpaku MD

Anire Okpaku, MD FACS
Miami Plastic Surgeon
4.5 out of 5 stars 26 reviews

Loosing #breast volume by going under the pectoralis muscles with implants?

Although it has not been showed, putting a breast implant under the pectoralis muscle likely compresses the implants more than if it was placed above the muscle.  Although it might only be a few cc's, it might be something to consider when choosing the size of implants.  Your surgeon will take this into consideration.  More important than the number of cc's is to pick an implant that will fit well and in proportion with your body size and breast width and height for a natural look.  Both Natrelle and Mentor offers a great variety of options of breast implants with various widths, heights, projections and gel consistencies.  Best of luck!  Dr. Marc DuPere Toronto Plastic Surgeon

Marc DuPere, MD
Toronto Plastic Surgeon
5.0 out of 5 stars 44 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.