One of the crucial decisions in breast augmentation is where the implant pocket sits relative to the chest muscle. This choice affects the final look, feel, recovery, and risk profile. Here are the four primary pocket locations and how they differ. (For the related decision of where the incision goes, see our post on breast implant incision options.)
Subglandular (Over the Muscle)
The implant sits behind the breast tissue but over the chest muscle. This tends to mean a shorter, less painful recovery and is suitable for women with adequate breast tissue and a well-defined crease. The trade-off: with no muscle coverage, the implant may be more visible or feel less natural, especially in thinner patients.
Partial Subpectoral (Dual Plane)
The dual-plane technique combines both worlds: the upper part of the implant is covered by the pectoral muscle while the lower part sits beneath the breast tissue. This gives a natural upper-pole transition and reduced visibility of implant edges, and is often recommended for those with minimal breast tissue or a tight lower fold. It can also help lower the risk of capsular contracture.
Subfascial
Here the pocket is created between the muscle and its fascia — the thin connective-tissue layer over the muscle. It aims to combine the coverage benefits of a submuscular pocket with less muscle interference, offering a natural look and feel for women with moderate tissue. It may not suit very thin patients or those at higher risk of implant visibility.
Split Muscle
A newer approach that partially divides the pectoral muscle to create the space. It provides muscle coverage while minimizing the distortion (animation) that can occur when the muscle contracts — helpful for athletic patients concerned about implant movement during activity. Because it involves muscle manipulation, recovery may be a bit longer.
The Bottom Line
Each pocket location has advantages and trade-offs, and the best choice depends on your natural anatomy, how much breast tissue you have, and your lifestyle. A consultation with a board-certified plastic surgeon is the way to match the technique to you — schedule one here.