Pre-Pectoral Breast Reconstruction: A Modern Approach to Implants
Pre-pectoral breast reconstruction places the implant above the chest muscle rather than beneath it, eliminating animation deformity and reducing postoperative pain. Dr. Brian Kelley, an Austin reconstructive surgeon, explains the technique, why he uses acellular dermal matrix, how direct-to-implant and staged approaches differ, how radiation factors in, and when sub-pectoral placement still serves patients better — including those without access to fat grafting.
Written by Brian P. Kelley, MD — Dual Board-Certified Plastic & Hand Surgeon
Affiliate Faculty, Dell Medical School at The University of Texas at Austin
Seton Ascension Institute for Reconstructive Plastic and Hand Surgery — Austin, Texas
Medically reviewed: June 17, 2026 · Last updated: June 17, 2026
Educational content. Not a substitute for individualized medical evaluation.
Introduction
For patients choosing implant-based breast reconstruction after mastectomy, one of the most important technical decisions is where the implant sits relative to the chest muscle. For decades, the standard was to place the implant beneath the pectoralis major muscle (or even multiple muscles). Over the past ten years, the field has shifted substantially toward placing the implant above the muscle — pre-pectoral reconstruction.
This shift has real consequences for how patients feel after surgery, how they recover, and how the reconstruction behaves over time. It is not simply a technical preference; it changes the patient experience in measurable ways.
I practice as a double board-certified plastic and hand surgeon in Austin, Texas, an Affiliate Faculty professor at Dell Medical School at The University of Texas at Austin, and a partner at the Seton Ascension Institute for Reconstructive Plastic and Hand Surgery. My published systematic reviews on breast reconstruction in the radiation setting directly inform how I counsel patients about implant reconstruction durability.1,2
This post explains what pre-pectoral reconstruction is, why I use acellular dermal matrix as part of it, how the timing decisions work, how radiation factors in, and where sub-pectoral reconstruction still has a role.
What Pre-Pectoral Reconstruction Is
In pre-pectoral reconstruction, the implant is placed in the space directly beneath the mastectomy skin and above the pectoralis major muscle. The pectoralis muscle is left undisturbed in its natural anatomic position.
This contrasts with the older sub-pectoral (or dual-plane) approach, in which the surgeon elevates the pectoralis major muscle and places the implant partially or fully beneath it. The sub-pectoral approach was the standard for decades, but it requires cutting and repositioning the muscle, which carries specific downsides discussed below.
The return to pre-pectoral placement — the technique was actually used in the 1970s, then abandoned because of high complication rates with the materials of that era — has been enabled by modern advances: better mastectomy techniques that preserve skin blood supply, intraoperative perfusion assessment, modern cohesive implants, and especially the use of acellular dermal matrix to support and protect the implant.
Why the Field Moved to Pre-Pectoral
The shift was driven by a clear set of advantages for patients, several of which are now supported by patient-reported outcomes data.
No animation deformity. When an implant sits beneath the pectoralis muscle, contracting the muscle (lifting, pushing, exercising) distorts the breast — the implant visibly moves and the breast shape changes with muscle activation. This is called animation deformity. Pre-pectoral placement eliminates it entirely because the muscle is not involved. This is one of the clearest and most consistent advantages in the literature.
Less postoperative pain. Because the muscle is not cut or stretched, pre-pectoral reconstruction is associated with significantly less postoperative pain. A systematic review and meta-analysis found that patients with pre-pectoral implants had significantly lower pain scores on both postoperative day 1 and day 7 compared with sub-pectoral patients.3
Better patient-reported satisfaction. The same meta-analysis found that patients with pre-pectoral placement reported significantly higher BREAST-Q satisfaction with outcome and psychosocial well-being scores, along with lower complication rates, compared with sub-pectoral patients.3
Faster recovery and no muscle dysfunction. Leaving the pectoralis muscle intact means patients recover arm and chest strength faster and avoid the muscle spasms and functional limitations that can follow muscle elevation.
The honest counterpoint: the evidence is not unanimous. Some single-center studies have found comparable or even better psychosocial outcomes with sub-pectoral placement in specific populations, and the overall body of evidence still includes heterogeneity. But the weight of the comparative data, and the clear advantage on animation deformity and early pain, has moved most reconstructive practice toward pre-pectoral placement as the default for appropriate candidates.
The Role of Mesh and Acellular Dermal Matrix
Pre-pectoral reconstruction generally requires a supporting material to hold and protect the implant, since the implant no longer has muscle coverage. Two broad categories exist: biologic matrices (acellular dermal matrix) and synthetic meshes.
Acellular dermal matrix (ADM) is human-, porcine-, or bovine-derived tissue that has been processed to remove all the cells while preserving the underlying collagen scaffold. This scaffold provides soft tissue support for the implant, and over time the patient's own cells and blood vessels grow into it — a process called incorporation. The ADM effectively becomes part of the patient's tissue.
Synthetic mesh — made of absorbable or permanent synthetic polymers — provides similar mechanical support at lower cost. Synthetic meshes are used by some surgeons with good results, and the evidence does not show a clear universal winner between biologic and synthetic materials.
Why I Use Acellular Dermal Matrix
In my practice, I typically use acellular dermal matrix rather than synthetic mesh for pre-pectoral reconstruction. My reasoning comes down to three properties that matter clinically.
It is soft. ADM has a natural tissue feel that integrates well with the mastectomy skin and the implant. In the pre-pectoral plane, where the supporting material sits just beneath the skin, this softness contributes to a more natural result and reduces the risk of palpability or visible edges.
It incorporates. Because ADM is a biologic scaffold, the patient's own blood vessels and cells grow into it over time, making it a living, vascularized part of the reconstruction rather than a permanent foreign material. This incorporation matters for long-term durability and for the tissue's ability to respond to challenges like infection or radiation.
It allows for better expansion. When reconstruction is staged with a tissue expander, ADM allows for more controlled and often more comfortable expansion of the lower pole of the breast. It supports the expanding tissue and helps define the breast shape, often allowing for faster and fewer expansion visits.
There is also evidence that ADM may reduce long-term capsular contracture. The biologic scaffold appears to reduce the myofibroblast activity that drives capsule formation, and several studies have reported lower capsular contracture rates with ADM, including in radiated patients.4
The trade-off is honest: ADM is more expensive than synthetic mesh, and it is a limited-resource material. For patients where cost or resource availability is a constraint, synthetic mesh or other approaches are reasonable alternatives, and I discuss this below in the context of patients in charity care programs.
Timing: When Reconstruction Happens
Pre-pectoral reconstruction can be performed on different timelines, and the right choice depends on the cancer treatment plan, the quality of the mastectomy skin, and patient factors.
Immediate reconstruction happens at the same operation as the mastectomy. The breast surgical oncologist removes the breast tissue, and the reconstructive surgeon places the implant or expander in the same surgical setting. This is the most common timing for patients who are candidates, and it spares the patient the experience of waking up without a breast mound.
Delayed reconstruction happens at a later operation, weeks to months or longer after the mastectomy. This is appropriate when the mastectomy skin quality is uncertain, when radiation is planned and the team wants to see how the tissue responds, or when the patient wants time to decide.
Delayed-immediate reconstruction is a hybrid: a tissue expander is placed at the time of mastectomy to preserve the skin envelope, and the definitive reconstruction (implant or flap) happens later, often after radiation is complete and the tissue has stabilized.
Direct-to-Implant Versus Staged Reconstruction
Within pre-pectoral reconstruction, there are two fundamental pathways.
Direct-to-implant (single-stage) reconstruction places the final implant at the time of mastectomy. The patient wakes up with the definitive reconstruction in place. This works well when the mastectomy skin is healthy and well-perfused, the desired implant size is achievable in one step, and there are no concerns that would favor a staged approach. The advantage is a single operation; the requirement is good skin quality and favorable anatomy.
Staged (two-stage) reconstruction places a tissue expander first — a temporary, adjustable implant that is gradually filled with saline over several visits to expand the skin envelope. Once expansion is complete and the tissue has settled, a second operation exchanges the expander for the definitive reconstruction.
The staged approach has a specific strategic advantage: it preserves options. A patient who starts with a tissue expander can later proceed to a permanent implant, or can convert to autologous (flap) reconstruction if that becomes the better path. This flexibility matters, particularly for patients whose radiation status or preferences may evolve.
For patients who may need radiation, the staged approach is often preferred — the expander holds the space during radiation, and the definitive reconstruction is performed after the radiated tissue has stabilized, when the team can best judge whether an implant or autologous tissue is the more durable choice.
Pre-Pectoral Reconstruction and Radiation
Radiation is one of the most important factors in implant reconstruction planning, and it deserves specific discussion.
Radiation damages tissue in the treated field — it reduces blood supply, induces fibrosis, and impairs healing. When an implant sits in a radiated field, the rates of capsular contracture, implant complications, and reconstruction failure all increase. My co-authored systematic review found reconstruction failure rates approaching 20% for implant-based reconstruction in the radiation setting.2
The question of whether pre-pectoral placement changes the radiation picture is an active area of study. A systematic review and meta-analysis of pre-pectoral versus sub-pectoral reconstruction in the setting of post-mastectomy radiation therapy found no statistically significant difference in overall complications, infection, seroma, skin flap necrosis, hematoma, or wound dehiscence between the two approaches, concluding that pre-pectoral reconstruction is a safe and effective option in the radiation setting.5
This is reassuring but should be read carefully: "safe and effective" in this context means comparable to sub-pectoral, not immune to the elevated risks that radiation imposes on any implant reconstruction. The fundamental reality remains: implants in radiated tissue carry higher complication and failure rates than implants in non-radiated tissue, regardless of plane.
This is why, for many patients facing radiation, I have a frank conversation about whether autologous (flap) reconstruction — which tolerates radiation meaningfully better than implants — is the more durable long-term choice. The staged approach, holding the space with an expander during radiation, preserves the ability to make that decision after seeing how the tissue responds. I discuss this further in my post on breast reconstruction after radiation.
When Sub-Pectoral Reconstruction Still Has a Role
Pre-pectoral reconstruction is my default for appropriate candidates, but sub-pectoral placement still has specific indications, and I want to be honest about one of them that relates to resource constraints.
Pre-pectoral reconstruction depends on having healthy, well-perfused mastectomy skin, because the implant sits directly beneath that skin with only the ADM for additional coverage. When the skin flap is thin, marginally perfused, or compromised, the muscle coverage of a sub-pectoral approach provides an additional layer of vascularized protection over the implant.
A specific situation in my practice involves patients in charity care and Travis County Medical Access Program (MAP) coverage. The funding in these programs is limited and often does not stretch to cover autologous fat grafting — a refinement procedure commonly used after pre-pectoral reconstruction to camouflage implant edges, improve contour, and add soft tissue coverage over the implant.
For these patients, pre-pectoral reconstruction without the option of subsequent fat grafting can leave visible rippling or implant edge visibility that would normally be refined with fat grafting. In this situation, sub-pectoral placement — using the patient's own muscle to provide that additional coverage over the upper pole of the implant — can produce a better result than pre-pectoral placement would without the ability to fat graft.
This is a real example of how the best reconstructive choice depends not only on the ideal technique but on the full set of resources available to a given patient. For patients with full access to the reconstructive spectrum including fat grafting, pre-pectoral is usually preferable. For patients without that access, the muscle coverage of a sub-pectoral approach sometimes serves them better. I discuss the broader resource and coverage landscape in my post on breast reconstruction coverage in Texas.
Outcomes and What to Expect
The patient-reported outcomes data for pre-pectoral reconstruction are favorable. In appropriately selected patients, pre-pectoral placement is associated with higher BREAST-Q satisfaction and psychosocial well-being, lower early postoperative pain, and the near-elimination of animation deformity, compared with sub-pectoral placement.3
The honest framing: pre-pectoral reconstruction is implant reconstruction, and it shares the general considerations of all implant reconstruction. Implants are not lifetime devices; they may need revision or replacement over the years. Capsular contracture, implant malposition, rippling, and the long-term need for maintenance surgery are realities of any implant reconstruction, including pre-pectoral.
Patient satisfaction with implant reconstruction also tends to evolve over time. Large patient-reported outcomes studies have shown that satisfaction with autologous reconstruction tends to be higher and more durable than with implant reconstruction at two years and beyond — a consideration I discuss honestly with patients choosing between implant and flap reconstruction, particularly younger patients with a long horizon ahead of them.
Recovery
Recovery from pre-pectoral reconstruction is generally faster and less painful than the older sub-pectoral approach, largely because the chest muscle is not disturbed.
Most patients stay in the hospital for one night, sometimes as an outpatient or up to two nights depending on whether the mastectomy was unilateral or bilateral and on individual factors. Drains are typically in place for one to three weeks. Restricted activity (no heavy lifting, no strenuous upper-body exercise) continues for four to six weeks.
For staged reconstruction, the expansion process begins a few weeks after surgery and continues over several office visits, with each visit adding saline to the expander. The second-stage exchange operation happens once expansion is complete and the tissue has settled — typically a few months after the initial surgery.
The final result evolves over months as swelling resolves and the tissue settles. For patients undergoing fat grafting as a refinement, that is typically performed as a later outpatient procedure once the reconstruction has stabilized.
Risks
Pre-pectoral reconstruction shares the general risks of any surgery (bleeding, infection, anesthetic complications) and the specific risks of implant reconstruction:
- Implant loss or failure, particularly in radiated patients
- Capsular contracture (firmness or distortion from scar tissue around the implant)
- Skin flap necrosis — a particular concern in pre-pectoral reconstruction because the implant sits directly beneath the mastectomy skin, making healthy skin perfusion essential
- Rippling or implant edge visibility, especially in thin patients without fat grafting
- Seroma (fluid collection)
- Need for revision surgery over time
The skin necrosis risk is why patient selection matters: pre-pectoral reconstruction requires healthy, well-perfused mastectomy skin, and surgeons assess this carefully both before and during the operation, sometimes using intraoperative perfusion imaging.
A Note on Local Care in Central Texas
Patients in Austin and across Central Texas considering implant-based breast reconstruction deserve a consultation that covers all the options — pre-pectoral and sub-pectoral placement, direct-to-implant and staged approaches, implant and autologous reconstruction — matched to their cancer treatment plan, anatomy, and goals.
I see patients from across Central Texas for breast reconstruction, including pre-pectoral implant reconstruction. I also participate in the Travis County MAP and Seton charity care programs, where I work to provide the best reconstruction possible within the resources available. Referrals from breast surgical oncologists, primary care physicians, and patient navigators are welcome.
Related Topics
- Breast reconstruction overview
- Implant-based breast reconstruction
- DIEP flap breast reconstruction
- Hybrid breast reconstruction: flap with implant combined
- Capsular contracture after implant breast reconstruction
- Breast reconstruction after radiation: choosing a durable option
- Not a DIEP candidate? Alternative flaps for breast reconstruction
- Oncoplastic breast reconstruction
- Breast reconstruction coverage in Texas: WHCRA and beyond
Frequently Asked Questions
Pre-pectoral breast reconstruction places the implant above the chest (pectoralis major) muscle, directly beneath the mastectomy skin, rather than beneath the muscle as in the older sub-pectoral approach. It is typically supported with acellular dermal matrix or synthetic mesh. The main advantages are no animation deformity, less postoperative pain, faster recovery, and higher patient-reported satisfaction in comparative studies.
In pre-pectoral reconstruction, the implant sits above the chest muscle, which is left undisturbed. In sub-pectoral (or dual-plane) reconstruction, the chest muscle is elevated and the implant is placed partially or fully beneath it. Pre-pectoral avoids animation deformity (breast distortion with muscle contraction) and causes less pain, while sub-pectoral provides additional muscle coverage over the implant that can be useful in specific situations.
Direct-to-implant (single-stage) reconstruction places the final implant at the time of the mastectomy, so the patient wakes up with the definitive reconstruction in place. It works well when the mastectomy skin is healthy and the desired implant size is achievable in one step. The alternative is staged reconstruction, where a tissue expander is placed first and gradually filled, then exchanged for the final reconstruction at a second operation.
In my practice, I typically use acellular dermal matrix (ADM) for pre-pectoral reconstruction because it is soft (contributing to a natural feel and reducing palpability), it thickens the thinned post-mastectomy skin, it incorporates (the patient's own cells and blood vessels grow into it, making it living tissue), and it allows for better and more comfortable tissue expansion. There is also evidence that ADM may reduce long-term capsular contracture. Synthetic mesh is a reasonable lower-cost alternative that some surgeons prefer.
Studies suggest pre-pectoral reconstruction is a safe and effective option in the setting of post-mastectomy radiation, with complication rates comparable to sub-pectoral reconstruction. However, all implant reconstruction carries higher complication and failure rates in radiated tissue compared with non-radiated tissue. For many patients facing radiation, autologous (flap) reconstruction is a more durable long-term choice, and a staged approach with a tissue expander preserves the ability to make that decision after radiation.
Yes. One advantage of the staged approach (starting with a tissue expander) is that it preserves options. A patient can later proceed to a permanent implant or convert to autologous flap reconstruction if that becomes the better path. This flexibility is particularly valuable for patients whose radiation status or preferences may evolve over time.
Animation deformity is the visible distortion of the breast that occurs when the chest muscle contracts in patients with sub-pectoral implants. Lifting, pushing, or exercising causes the implant to move and the breast shape to change with muscle activation. Pre-pectoral reconstruction eliminates (or significantly reduces) animation deformity because the implant is not placed beneath the muscle.
Recovery from pre-pectoral reconstruction is generally faster than sub-pectoral because the chest muscle is not disturbed. Most patients stay one night in the hospital, have drains for one to two weeks, and restrict strenuous activity for about four weeks. For staged reconstruction, the expansion process takes place over several office visits, and the second-stage exchange happens a few months after the initial surgery.
As a reconstructive surgeon at the Seton Ascension Institute for Reconstructive Plastic and Hand Surgery, I see patients from across Central Texas for breast reconstruction, including pre-pectoral implant reconstruction. Referrals from breast surgical oncologists, primary care, and patient navigators are welcome, and direct patient inquiries are accepted depending on individual insurance plans.
1. Kelley BP, Ahmed R, Kidwell KM, Kozlow JH, Chung KC, Momoh AO. A systematic review of morbidity associated with autologous breast reconstruction before and after exposure to radiotherapy. Annals of Surgical Oncology. 2014;21(5):1732–1738. PMID: 24473643.
2. Momoh AO, Ahmed R, Kelley BP, Aliu O, Kidwell KM, Kozlow JH, Chung KC. A systematic review of complications of implant-based breast reconstruction with prereconstruction and postreconstruction radiotherapy. Annals of Surgical Oncology. 2014;21(1):118–124. PMID: 24081801.
3. Manrique OJ, Banuelos J, Abu-Ghname A, et al. Quality of life, pain of prepectoral and subpectoral implant-based breast reconstruction with a discussion on cost: A systematic review and meta-analysis. Journal of Plastic, Reconstructive & Aesthetic Surgery. 2022;75(8):2519–2531. PMID: 35393263.
4. Margulies IG, Salzberg CA. The use of acellular dermal matrix in breast reconstruction: evolution of techniques over 2 decades. Gland Surgery. 2019;8(1):3–10. PMCID: PMC6378261.
5. Lin J, Zheng X, Shi C, et al. A systematic review and meta-analysis of postmastectomy radiation therapy on prepectoral versus subpectoral breast reconstruction. Annals of Translational Medicine. 2022. PMID: 36700017.
6. Santosa KB, Qi J, Kim HM, Hamill JB, Wilkins EG, Pusic AL. Long-term Patient-Reported Outcomes in Postmastectomy Breast Reconstruction. JAMA Surgery. 2018;153(10):891–899. PMID: 29926096.
7. American Society of Plastic Surgeons — breast reconstruction options: https://www.plasticsurgery.org/reconstructive-procedures/breast-reconstruction.
Closing Disclaimer
This article is educational and does not establish a doctor-patient relationship. It does not replace individualized consultation, examination, or review of personal medical history and oncologic treatment plans. Patients considering breast reconstruction are encouraged to schedule a consultation to discuss their specific situation and reconstructive options.
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