Implant Placement Plane: The Choice That Decides the Result

Two patients with the same anatomy can receive the same implant from the same manufacturer and end up with very different breasts. The placement plane is the largest single reason. The plane decides how much native soft tissue covers the implant, how the upper-pole slope is set, how visible the implant edge is, and how the breast moves when the pectoralis contracts.

It is also the plane — far more than the implant — that drives the long-term complications that bring patients back for revision: capsular contracture, animation deformity, bottoming-out, and visible rippling. Choosing the wrong plane is one of the most common reasons primary-augmentation patients become revision patients.

There are many academic classifications. In daily practice, four categories cover almost every case:

• •Subglandular — under breast tissue, above the pectoralis fascia.
• •Subfascial — under the pectoralis fascia, above the muscle itself.
• •Dual plane (Tebbetts I / II / III) — partial pectoralis cover at the upper pole with progressive release of the inferior origin.
• •Submuscular (complete) — fully covered by the pectoralis major, sometimes with serratus reinforcement laterally.

Subglandular placement is fast surgically and gives the most direct shape from a chosen implant — what you select is essentially what you see. The trade-off is candor: in thin patients, the upper pole and the implant edge are visible. Long-term contracture rates trend higher in the subglandular plane than in any partial-muscle plane.

It remains a reasonable choice for patients with thick native breast tissue and moderate implant sizes, and is occasionally the right plane for specific revision cases — but it is rarely the right primary choice in slim Korean and Asian patients.

Subfascial places the implant beneath the pectoralis fascia, a thin but defined layer that adds a small but real amount of upper-pole coverage. It avoids muscle contraction and animation, and gives a more controlled upper-pole slope than subglandular in patients with thin breast tissue.

It is technically demanding — the fascia is thin and tears easily — and requires a surgeon comfortable working in that plane. In the right patient (moderate tissue thickness, no extreme volume goal) it is an excellent middle-ground.

Dual plane describes a pocket where the upper pole is under the pectoralis and the lower pole is under glandular tissue, with the muscle's inferior origin released to varying degrees (Type I, II, III). The result is muscle cover where you most need it — preventing visible rippling at the décolleté — and glandular cover where you most need the implant to descend with the natural fold.

For the average slim Asian patient with moderate native tissue, dual plane is the most common primary-augmentation plane and the one I default to unless the anatomy says otherwise.

Full submuscular cover is the most demanding on the patient — more discomfort, longer recovery, and unavoidable animation deformity when the chest is contracted. It is the right choice in very thin patients, in patients with thin or stretched skin, and in specific revision contexts where additional soft-tissue cover is required to disguise the implant edge.

It is no longer the routine primary choice it was 25 years ago, but it is still the right plane for the patient who has thin skin and needs maximal cover.