How to avoid animation deformity?

When undergoing breast augmentation there are a number of choices which need to be made: saline or silicone? Volume: Larger or smaller? Incision? However, one of the most commonly debated choices is that of implants placement: subglandular/ submammary vs. subpectoral/ submuscular? While many surgeons recommend submuscular placement there are distinct differences to each approach.
 Subglandular Augmentation (“overs”): 
Subglandular augmentation means place of the implant underneath the breast tissue but above the pectoralis muscle. Subglandular placement spares the pectoralis muscle which leads to reduced post operative pain/discomfort and no impact on muscle function post augmentation. Recovery is also faster.Subglandular augmentation can impact mammographic evaluation of the breast. However, as dedicated breast radiography has become more prevalent this has become less of an issue. Fellowship trained radiologists have become familiar with evaluating breasts post augmentation. It is also important to note that implant position does not interfere with visualization of breast tissue via contrast enhanced MRI (the most sensitive and specific study available for breast cancer detection).Studies suggest there is an increased risk of capsular contracture when implants are placed in a subglandular space.Aesthetically, implants placed superficial to the pectoralis major create a rounded, convex appearing breast profile. This effect is camouflaged, at least initially in larger breasted patients. However, as a woman ages fat atrophies and breast tissue descends. The result is a more noticeable implant specifically in the upper pole. Similarly, patients who have thin coverage superiorly are more likely to be able to perceive the implants and at higher risk of visible rippling when compared to subpectoral augmentation.Subglandular implants can also create the illusion of improved cleavage by preferential over-dissection of the central/medial pocket allowing the implants to be forced more to the midline. There is no limiting muscle as there is in a submuscular augmentation. 
Subpectoral Augmentation/Sub-muscular/Dual Plane (“unders”): 
Subpectoral augmentation is technically a bit of a misnomer. Traditionally, subpectoral augmentation involves the release of the pecotralis major muscle from its lower attachments. This allows the muscle to “window-shade.” The upper hemisphere of the implant sits underneath the muscle (dual plane). This release contributes much of the discomfort encountered postoperatively by patients.Subpectoral implants have a lower rate of capsular contracture.Aesthetically, in contrast to submammary implants (which are prominent in the upper pole- especially in thinner patients), the pectoralis muscle both conceals the underlying implant and flattens the upper pole. This flattening effect creates a natural sloping as one proceeds from the upper portion of the implant to the lower portion.The most commonly cited drawback to sub-muscular augmentation is the animation deformity associated with contraction of the overlying muscle.In my practice, the vast majority of patients will have the implants placed submuscular for all the reasons listed above. This is also known as a dual plane (due to the fact following muscle release half the implant is under the muscle while the lower pole is not). Complete submuscular coverage is rarely performed due to the distorting pull of the muscle.
With regards to your specific question, subglandular is preferred when animation is a major concern. However, animation is a less noticeable phenomenon in cosmetic augmentation (vs. reconstruction).
Based on your photos alone, you would appear to be an excellent candidate for  a submuscular 
As always, discuss your concerns with a board certified plastic surgeon (ABPS).

The question IS how to minimize an animation deformity. As an experienced plastic surgeon who has dedicated a considerable amount of my practice to revisionary breast surgery, I have a few perspectives. The rate of complications associated with implants placed on top of the muscle is extremely high. When you disconnect the attachments between the Pec Major muscle and the breast and place an implant, the inevitable effects of gravity is that the implant will slide down the chest wall or  commonly will develop capsular contracture. The rate is almost double on top of the muscle. You will find very few experienced plastic surgeons placing primary implants in the subglandular space for these reasons. I find that placing a higher profile and more cohesive implant in a slightly higher location on the chest wall diminishes to animation deformity. I use this technique in my figure fitness/ bodybuilder patients with excellent results. Most patients have mild movement associated with flexing their muscle, but it is not a major concern or issue. Best wishes to you.

hello thank you for your question and provided inforamtion as well;..based in your question its difficulted evaulate your case if the question dont have a picture, its recommended to get a consultation in personal with a plastic surgeon.