What's the difference between behind the muscle and in front of the muscle implants? (Photo)

The most common placement of a breast implant in the US is in the subpectoral (or dual plane) position.  This uses the pectoralis muscle to cover the top three quarters of the implant where you need the most coverage, while allowing the breast to feel soft and not be constricted by any other musculature.  It provides a protective effect against capsular contracture compared to the subglandular placement ( above the muscle), and the muscle still has all its normal function.  I recommend going fro a few consultations with board certified plastic surgeons and see what will work best for you.  I hope this helps.

Implants can be placed over the muscle or under the muscle. If it is placed over the muscle, it is called a subglandular placement. This is because the only tissue covering the implant will be the woman's breast gland. The other option is to place the implant under the muscle (submuscular). The muscle referred to in this case is a muscle called the pectoralis muscle. It is the main muscle of the chest and is located directly beneath the breast gland. These options are shown in the diagram on this page. 
The most common placement is submuscular. In order for the implant to fit under the muscle, and for the appearance to be aesthetically pleasing, some muscle fibers must be detached from the inferior ("bottom") of the breast and from the corner of the middle portion of the muscle ("inferior-medial"). The remaining attachments of the muscle are strong enough to allow full function of the muscle. Once the muscle fibers are detached to allow the implant to fit under it, the muscle will move upward slightly. You can see this in the diagram. The bottom of the muscle is no longer located at the bottom of the breast. Instead, the bottom of the muscle is located near the middle or lower 1/3 of the implant. Thus, the upper portion of the implant is covered by the muscle and the lower half or 1/3 of the implant will not be covered by muscle. The lower part of the implant will be covered by breast tissue and gland only. This is why a submuscular placement is also called a "dual plane." It's a "dual" plane because two kinds of tissue are covering it. 
Placing the implant under the muscle has several advantages. The muscle provides more coverage and cushion over the implant. This creates smoother contours, a more natural look, and prevents rippling or edges from being seen. Another advantage is that a submuscular placement has been shown to decrease the risk of capsular contracture. To learn more about breast augmentation, you can read “A Comprehensive Guide to Breast Augmentation."

The decision whether to place breast implants in front of or behind the pectoralis major muscle is an individualized one, and is dictated by the specific circumstances of a patient’s situation.
Advantages of placing an implant in front of the muscle include a faster operative and recovery time, including a reduced waiting time for the breast to assume its final shape.  This subglandular placement can be quite helpful in treating breast ptosis in some situations. Additionally, in women who are fitness models and bodybuilders, subglandular (in front of the muscle) placement of the breast implant may minimize distortion when the patient fires her pectoralis major muscle.  
Drawbacks of subglandular placement of breast implants include an increased incidence of rippling (visibility of the contour of the breast implant through the skin); an increased incidence of capsular contracture (hardening of the breast due to scar tissue), and a faster rate of stretching and descent of breast tissue (ptosis) over time.  
It is important to note that many of these potential complications can be minimized or eliminated by choosing the appropriate type and size implant for the right patient.  In certain situations, subglandular placement of the breast implant is the best answer.
Advantages of submuscular placement of a breast implant include a decreased incidence of rippling; a decreased incidence of capsular contracture; and a slower rate of stretching of the breast tissues and breast tissues.  
Patients often ask surgeons which technique of performing a surgery is “better” in the abstract, but this is the wrong framing of the question.  The question you really want answered  is, given your aesthetic goals, anatomy, and clinical situation, “what is the best technique for me?”

Hello there 
Well basically implants behind the muscle have a softer upper pole - you avoid seeing a sharp edge .
And there is less risk of going hard [capsular contracture] behind the muscle .
So generally it is more common to put implants behind the muscle [dual plane] . 
However you get more distortion on animation - when you flex the pecs - if the implants is behind the muscle . This can be a big problem in a body builder for example .
Now many other factors come in to play .
Raising the sheath ]fascia] off the muscle can help  hide the upper border of the implant even if it is in front of the muscle .
And implants are better hidden if you have more breast tissue or soft tissue there so they are less obvious even if you are in front of the muscle .
It was thought that implants look bigger in front of the muscle but in fact a study has shown that due to the pressure effect of the implant on the breast tissue you get thinning of the breast tissue and this is actually more marked if the implant is in front of the muscle . So that makes the result look smaller if the implants are in front of the muscle .
You can get good results with wither pocket . It depends on many features that should be discussed in your consultation .
Cheers
TS

Hi they're thank you for your questions. Classically implants which have been around since the 1960s were placed behind he Breast tissue and on end pec muscle of the chest. Concerns about higher rates of capsular contractures made surgeons consider putting them in a different place under the muscle. The argument went that this will reduce the capsular contracture rates becaus the muscle will constantly move on the implant preventing capsular contractures. This has been proven by multiple studies. However putting the implant entirely under the muscle gives an unnatural appearance particularly during movement, hence an American Surgeon Tibbet designed the dual plane where the implant is partly under he muscle thereby benfitting from constant movement and partly under the breast which therefore gives the best of both worlds. I recently authored a chapter on breast augmentation in the latest plastic surgery international reference textbook. Good luck