How Breast Implant Pocket Selection Shapes the Final Look

The plane, or pocket, is simply the space the implant is placed in relative to the pectoralis muscle of the chest. The main options are above the muscle (subglandular), below it (submuscular), or a combination of the two (dual-plane). I think of it as choosing which layers of your own tissue will cover and support the implant. That choice determines how much coverage the implant has, how visible its edges are, and how it behaves when you move. Because it sets all of those things at once, the plane is one of the most consequential decisions in the whole operation. It is the layer everything else — size, profile, and shape — is then fitted into, which is why I give it so much attention.

There is no single best plane; there is a best plane for your anatomy. Each option has genuine advantages and tradeoffs, so the right answer depends on your tissue thickness, your goals, and how your body is likely to behave over time.

For many patients I favor a dual-plane approach, because it captures the coverage of a submuscular placement while limiting the movement that a full muscular pocket can cause. But that is a frequent preference, not a fixed rule. What I never do is apply one plane to everyone. The whole point of understanding the planes is to match the right one to the individual, so my job in the consultation is to work out which option gives you the most natural, durable result rather than defaulting to a single technique.

Animation deformity is movement or distortion of the breast that happens when the pectoralis muscle contracts, and it is a consideration specific to placements under the muscle. When the whole implant sits beneath a tight, undivided muscle, flexing that muscle can shift or flatten the breast. It is most associated with a full submuscular pocket. Because the muscle lies directly over the entire implant, its contraction pulls on the implant and can cause a visible change in shape during certain movements.

One of the reasons I often use a dual-plane approach is that releasing the lower attachments of the muscle reduces this effect. By freeing the muscle’s grip on the lower implant, the breast moves far more naturally while still keeping the coverage benefits of partial muscle cover.

Yes, considerably. The more soft tissue that covers an implant, the less perceptible its edges and any surface rippling will be, both to sight and to touch. This is one of the main reasons plane selection matters so much. A subglandular implant, with only gland and skin over it, is more likely to show or feel its edge, especially in the upper pole and in patients with thin tissue. Placing the implant under the muscle, or partly under it, adds a dampening layer that hides these features.

This is why I weigh your existing tissue thickness so carefully when choosing the plane. Where the soft-tissue cover is thin, a plane that adds muscle coverage over the visible upper pole helps ensure the result looks and feels smooth rather than revealing the implant beneath.

Not always — it has clear advantages, but also a specific cost. A full submuscular placement gives excellent upper-pole coverage and a lower capsular-contracture risk, which is why it was the default for a long time. Its downside is animation: the same muscle that provides the coverage can distort the breast when it contracts. So while it looks well-covered at rest, it is not automatically the most natural option in movement. This is exactly the problem the dual-plane approach was designed to solve. By placing only the upper portion under the muscle and letting the lower portion sit on the gland, I keep the coverage where it is needed while reducing the animation, which for many patients is a better balance than a pure under-the-muscle pocket.

The evidence suggests it does. Capsular contracture — a firm, sometimes distorting capsule forming around the implant — tends to show a higher signal with subglandular placement and a lower one with planes that provide more tissue coverage. Published outcome data support this pattern, with well-covered planes showing notably low contracture rates. The more vascular, dynamic environment of a deeper plane appears to create a more favorable biological interface around the implant.

I take this into account when I plan, because contracture is a long-term concern rather than an immediate one. Choosing a plane with a favorable profile is one of the ways I try to protect not just how the result looks at first, but how it holds up over many years.

No, and this is an important point to understand. Some marketed techniques are restricted to a single plane by their own constraints — for instance, methods performed under local anesthesia alone are often limited to the subglandular space, because that setting cannot facilitate the relaxed dissection a submuscular or dual-plane pocket requires. The problem with such an approach is that it reverses the logic of good surgery. Instead of choosing the ideal plane for the patient, it forces the patient’s anatomy to fit the one plane the technique can offer.

I prefer to retain the flexibility to choose whichever plane best suits each individual. A method that can only deliver one option sacrifices customization for convenience, and in my view the plane should always be selected for the anatomy, never the reverse.

I start from your anatomy and your goals. I assess the thickness and quality of your soft-tissue cover, the position and dynamics of your pectoralis muscle, your existing breast shape, and the result you want, then I choose the plane that will deliver it most naturally and durably.

For many patients that leads to a dual-plane approach, but I make the decision individually rather than applying a template. Where the tissue is thin, coverage weighs more heavily; where movement matters, animation does. The reason I work this way is that, in my experience, the plane is the foundation the whole result rests on. Choosing a surgeon really means finding someone who selects the plane deliberately for your anatomy, and then fits the implant to it, rather than the other way around.