Breast Implants Over or Under the Muscle? Choosing Implant Placement in North Jersey

Almost every patient who comes to Dr. Farhad Rafizadeh’s Morristown office to talk about breast augmentation has read something about implant placement — and one version of the same question shows up again and again in his consultation room and on his RealSelf Q&A page.

It is a genuinely good question, and the honest answer is that neither placement is universally “better.” The right layer depends on how much of your own breast tissue you have to work with, your body type, your activity level, and the look you are after. What Dr. Rafizadeh can say clearly is that for the majority of augmentation patients in Northern New Jersey, some version of an under-the-muscle pocket — most often a dual plane — produces the most natural, durable result. But there are real situations where over the muscle is the smarter call, and it is worth understanding why.

The Two Layers, Simply Put

Your breast sits on top of the pectoralis major, the large fan-shaped chest muscle. When we place an implant, we are choosing which layer to slide it into:

• Over the muscle (subglandular): The implant sits on top of the pectoralis muscle, directly beneath your breast gland. Only skin and breast tissue cover the implant.
• Under the muscle (submuscular): The upper part of the implant is tucked beneath the pectoralis muscle, so muscle plus gland plus skin cover the top of the implant.
• Dual plane: A hybrid. The lower edge of the muscle is released so the top of the implant is under muscle while the bottom sits under the gland and can fill out the lower breast naturally. This is the workhorse technique in modern augmentation.

A fourth option, subfascial (under the thin fascia covering the muscle but not the muscle itself), exists and is used selectively, but the over-versus-under debate is really about the three above.

Over the Muscle (Subglandular): Where It Shines — and Where It Doesn’t

Subglandular placement has genuine advantages. Because the muscle is never divided or stretched, recovery tends to be less painful in the first several days, and there is no animation — the breast doesn’t distort when you flex your chest. It can also produce fuller upper-pole cleavage, which some patients specifically want, and it pairs well with a mild lift where the implant needs to sit high on the gland.

The trade-offs are the reason it isn’t Dr. Rafizadeh’s default for most patients:

• Rippling and palpability. With only skin and gland over the implant, edges and ripples are easier to see and feel — a bigger issue the thinner your tissue.
• A rounder, more “done” upper pole. Without muscle to soften the transition, the top of the breast can look more obviously augmented.
• Mammographic screening. An implant in front of more of your breast tissue can obscure that tissue on imaging.
• Capsular contracture. Several long-term series have reported higher contracture rates in the subglandular plane than under the muscle.

Under the Muscle (Submuscular & Dual Plane): The Modern Default

Slipping the top of the implant under the pectoralis adds a layer of living muscle over the part of the implant most visible to the eye and the hand — the upper pole. That single fact drives most of its advantages: a smoother, more natural slope at the top of the breast; less visible rippling; edges that are harder to feel; better mammographic visualization; and, in multiple studies, lower capsular contracture rates.

The classic criticism of a purely submuscular pocket is that the muscle can hold the implant up too high, leaving the lower breast looking flat. That is exactly the problem the dual plane solves. By releasing the muscle’s lower attachment, the implant is under muscle up top but free to fill the lower pole below — you get natural upper-pole coverage and a natural lower-breast drape.

“When a patient has thin tissue — and many women considering augmentation do — the muscle is the difference between an implant you can see and feel and one that reads as your own breast. That’s why the dual plane has become my default: it borrows the coverage of the submuscular pocket without the high, stuck look.” — Dr. Farhad Rafizadeh

How Dr. Rafizadeh Chooses Placement for Each Patient

Rather than applying a rule, Dr. Rafizadeh looks at a handful of specific factors during consultation in Morristown:

• Tissue thickness. A simple pinch at the top of the breast tells him how much natural cover is available. Thin cover strongly favors going under the muscle.
• How much breast tissue you already have. A patient with generous natural tissue can camouflage an implant well in either plane; a very slim patient usually cannot.
• Activity level. Competitive athletes and heavy weightlifters may prefer over the muscle or a low dual plane to minimize animation.
• Degree of sag. Real ptosis may need a lift combined with the implant, which changes the placement calculus.
• Screening and long-term care. Because implant placement affects mammograms, he weighs your screening history and family risk.

He also chooses the implant itself to match the plan — Dr. Rafizadeh uses Motiva, Allergan, and Mentor smooth cohesive implants and never uses textured devices. A well-chosen cohesive gel implant reduces rippling in any plane, which matters most when soft-tissue coverage is limited.

Animation Deformity: The One Real Downside of Going Under

The honest cost of a submuscular pocket is animation deformity — a temporary movement or flattening of the breast when you deliberately contract your chest muscle, because the flexing pectoralis squeezes the implant beneath it. It is only visible with active muscle contraction, most patients find it minor or never notice it in daily life, and a low dual plane reduces it. For a small number of very muscular or active patients it can be bothersome, and when it is, it can be corrected with a revision that moves the implant out from under the muscle into a new pocket. Subglandular placement, by contrast, has no animation at all — one of the few areas where over-the-muscle wins outright.

Placement, Mammograms & Long-Term Screening

Because most women having augmentation will have decades of mammograms ahead of them, screening deserves a place in the decision. Implants under the muscle generally interfere less with imaging: more of your breast tissue lies in front of the implant where it can be compressed and seen, and displacement (Eklund) views are usually easier. Whatever plane you choose, always tell your imaging center you have implants so they use the correct technique. If you want the full picture, see our note on imaging and monitoring after silicone implants.

Questions Patients Should Ask Any Plastic Surgeon in North Jersey

If you are interviewing surgeons in Morristown, Summit, Chatham, Madison, Short Hills, Bernardsville, or anywhere across Northern New Jersey, the placement conversation is a good test of how carefully a surgeon is thinking about your anatomy. Useful questions to ask:

• Based on my tissue thickness, would you recommend over, under, or dual plane — and why for me specifically?
• How will this placement affect rippling and how much I can feel the implant?
• Given my activity level, how likely am I to notice animation?
• How will this choice affect my mammograms and screening?
• What implant type and profile are you pairing with this pocket, and why?
• If I’m not happy later, can the placement be revised?

A surgeon who has done thousands of augmentations will answer these in concrete, personalized terms rather than reciting a one-size rule.

People Also Ask

Common Questions Patients Search About Breast Implant Placement

What are the cons of over-the-muscle implants?

The main downsides are more visible rippling and palpable edges — especially in thin patients — a rounder, more obvious upper pole, historically higher capsular contracture rates in some studies, and more interference with mammographic screening because the implant sits in front of more breast tissue. For a patient with generous natural tissue these matter less, which is why over-the-muscle is not wrong for everyone, just not the right default for most.

Can you feel breast implants over the muscle?

You are more likely to feel a subglandular implant, because only skin and breast gland lie between the implant and your hand. In thin patients that can mean feeling the edge along the upper or side of the breast, and sometimes seeing rippling. Placing the implant under the muscle adds a layer over the top, making the edges much harder to feel. A cohesive silicone gel implant and adequate soft-tissue coverage both reduce how palpable an implant is.

Can subglandular implants look natural?

They can — particularly in a patient with enough of her own breast tissue to drape over and camouflage the implant, or with a moderate-profile cohesive gel implant that isn’t oversized. Where subglandular tends to look less natural is in thin patients, where the upper pole can look rounded and edges can show. Dr. Rafizadeh judges this on your actual tissue thickness with a simple pinch test rather than applying a blanket rule.

How common is capsular contracture under the muscle?

Capsular contracture — hardening of the scar capsule around an implant — can happen with any placement, but several studies report lower rates under the muscle than in the subglandular plane. Muscle movement over the implant and possibly better blood supply are thought to contribute. Going submuscular doesn’t eliminate contracture, but the reduced rate is one reason submuscular and dual plane pockets are so widely used. You can read more in our guide to capsular contracture.

Can animation deformity be fixed?

Yes. Animation deformity — the flexing distortion of a submuscular implant when the chest muscle contracts — can be corrected with a revision that moves the implant out from under the muscle into a subglandular or subfascial pocket, sometimes with added soft-tissue support. It reliably resolves the problem. Most patients with mild animation never need it, since the effect is only visible with deliberate muscle contraction, not in everyday movement.

Can you feel breast implants if they are under the muscle?

You may still feel the lower or outer part of an under-the-muscle implant, since the muscle only covers the upper portion, but the top is much harder to feel than with subglandular placement. Overall, submuscular and dual plane implants feel more like natural tissue in the upper pole, especially in thin patients. Implant type, size relative to your frame, and your own tissue thickness all affect how much you feel it.

What is the healthiest option for breast implants?

There is no single healthiest choice for everyone, but the safest, most durable plans share features: an FDA-approved smooth cohesive implant from an established maker, a size appropriate to your frame rather than oversized, and a placement — usually submuscular or dual plane — that gives good coverage and clear mammographic screening. Dr. Rafizadeh uses Motiva, Allergan, and Mentor implants and never uses textured devices. The healthiest plan is the one matched honestly to your anatomy and goals.

Sources & References

1. Strasser EJ. “Results of Subglandular Versus Subpectoral Augmentation Over Time: One Surgeon’s Observations.” Aesthetic Surgery Journal. 2006;26(1):45–50. PubMed
2. Fracol M, Feld LN, Chiu WK, Kim JYS. “An overview of animation deformity in prosthetic breast reconstruction.” Gland Surgery. 2019;8(1):95–101. PubMed Central
3. American Society of Plastic Surgeons. “Breast Augmentation.” plasticsurgery.org
4. U.S. Food & Drug Administration. “Breast Implants — Information for Patients and Providers.” fda.gov
5. Breastcancer.org. “Breast Implant Animation Deformity (Dynamic Distortion).” breastcancer.org
6. Dr. Farhad Rafizadeh, Morristown NJ — RealSelf Q&A. realself.com

Related Reading From Dr. Rafizadeh’s Blog

Patients researching breast augmentation and implant choices in Northern New Jersey may find these articles useful:

• Natural-Looking Breast Augmentation in NJ
• Choosing the Best Breast Implant
• How to Determine Your Breast Implant Size
• Breast Implant Rippling: Causes & Fixes
• Capsular Contracture: Signs, Prevention & Treatment
• Quick Recovery After Breast Augmentation in New Jersey

Bottom Line

Over or under the muscle isn’t a contest with a single winner — it’s a match between your anatomy and your goals. For most augmentation patients in Northern New Jersey, especially those with thinner tissue, a dual plane pocket gives the most natural upper-pole coverage, the least visible rippling, and clearer mammograms, with animation being the one trade-off — usually minor. Over-the-muscle placement remains the right answer for select patients with ample natural tissue or a very active chest who want to avoid animation entirely. The decision should be made with a surgeon who examines your tissue, not from a headline.

If you are considering breast augmentation in Morristown, Summit, Chatham, Madison, Short Hills, or anywhere across Northern New Jersey, Dr. Rafizadeh is happy to examine your tissue, walk through the placement options for your specific anatomy, and show you what your result could look like on a personalized simulation during a consultation.