What does subpectoral mean?
The implant sits partly or fully beneath the pectoralis major chest muscle.
This differs from prepectoral reconstruction, where the implant sits above the muscle.
Breast & Chest • Reconstruction
Subpectoral Breast Reconstruction
Subpectoral breast reconstruction rebuilds the breast shape after mastectomy using an implant placed partly or fully beneath the chest muscle.
Is it always one operation?
No. Reconstruction may use a tissue expander first or, in selected cases, a permanent implant immediately.
Later surgery may be needed for implant exchange, shape adjustments, or complications.
Can it fit around cancer treatment?
Often, but timing needs coordination with your cancer care team.
Radiation, skin healing, and other treatments can affect the safest approach and expected results.
01 · Overview
Understanding reconstruction beneath the chest muscle
Subpectoral reconstruction uses the chest muscle to cover part or all of a breast implant. It restores breast contour after mastectomy; it does not restore the original breast tissue, normal sensation, or the ability to breastfeed from that breast. [1]
The surgeon creates a pocket beneath the muscle. Depending on the plan, muscle covers the upper portion or more of the implant. A surgical mesh or processed tissue support may help support areas not covered by muscle. Ask what coverage and support your surgeon proposes. [2]
This is different from cosmetic breast augmentation and from reconstruction using your own tissue alone. Skin thickness, blood supply, radiation history, overall health, and your preferences help determine whether an under-muscle implant is suitable. [2]
- Implant position
- Partly or fully beneath chest muscle
- Timing
- At mastectomy or in a later operation
- Treatment pathway
- Expander first or direct-to-implant
- Long-term care
- Implant follow-up and possible future surgery
Why might a surgeon recommend placing an implant beneath muscle?
Muscle provides an additional layer of coverage, which may be useful when the remaining skin and soft tissue are thin. The benefit must be balanced against muscle tightness, discomfort, and movement-related changes in breast shape.
What is animation deformity?
It is a visible change in breast shape or implant position when the chest muscle contracts. Some people notice it while exercising or pushing with their arms. Its severity varies, and bothersome changes may lead to a discussion about revision.
02 · Concerns & Goals
What you may want to discuss
Your priorities may include breast shape, comfort, movement, and how reconstruction fits with cancer treatment. These are all important parts of planning.
Loss of breast shape
You may want a breast contour that helps clothing fit more comfortably after mastectomy. Reconstruction can create a mound, but it will not feel or behave exactly like a natural breast.
Thin tissue coverage
Muscle coverage may help conceal an implant, but visible edges or rippling can still occur, especially where coverage is limited.
Comfort and chest movement
Discuss exercise, work, and daily activities that rely on your chest muscles. Tightness and movement-related shape changes are particular considerations with this placement.
Balance between breasts
Differences in size, height, or shape may remain. Surgery on the other breast or later adjustments may be offered, but symmetry cannot be guaranteed.
03 · Options
How the approaches differ
These are planning choices within subpectoral reconstruction, not four separate procedures. Your surgeon may combine them based on tissue health and treatment needs.
Expander-to-implant reconstruction
A temporary expander creates space before a permanent implant is placed.
How it worksThe expander is positioned beneath the muscle and gradually filled during office visits. A later operation exchanges it for an implant.
May suitMay suit people whose skin envelope needs gradual expansion or whose reconstruction is being staged around other treatment.
Main tradeoffRequires repeated visits and another operation; expansion can cause pressure or tightness.
Direct-to-implant reconstruction
A permanent implant is placed during the initial reconstruction.
How it worksThe surgeon places an implant beneath the muscle when the skin and blood supply can support the planned reconstruction.
May suitMay suit selected patients with healthy remaining tissue and a suitable breast size and treatment plan.
Main tradeoffIt is not suitable for everyone and does not eliminate the possibility of later surgery.
Partial muscle coverage
Muscle covers the upper implant, with a separate plan for lower support.
How it worksThe surgeon may use a processed tissue matrix or surgical mesh to help support the lower implant pocket.
May suitMay suit patients whose anatomy and desired shape favor this pocket design.
Main tradeoffMuscle movement can still affect breast shape. Added support materials have their own risks and costs.
More complete muscle coverage
The surgical plan uses muscle coverage over more of the device.
How it worksThe surgeon creates a pocket using available muscle and nearby tissue; the precise coverage depends on anatomy and technique.
May suitMay suit selected patients where additional tissue coverage is a priority.
Main tradeoffThe pocket may feel tight and can limit expansion or shape. Ask how muscle function and comfort may be affected.
Implant type, surface, tissue support, and timing are separate decisions. Ask your surgeon to explain the benefits and risks of each component of your proposed reconstruction. [1] [2] [4].
How does radiation affect the decision?
Radiation can make tissues less flexible and increase the likelihood of healing problems, firmness around an implant, and reconstruction failure. Your teams may recommend a staged approach, delayed reconstruction, or reconstruction with your own tissue.
Can an implant later be moved above the muscle?
Sometimes. Revision to a prepectoral position may help selected patients with troublesome animation or discomfort, but it depends on tissue coverage and blood supply. It adds surgical risks and may require fat grafting or other support.
04 · Results
What may improve and what may remain
Breast shape
Reconstruction can restore a breast mound, but natural appearance and symmetry vary.
- Implant edges, rippling, or differences between breasts may remain visible.
- Fat grafting or other adjustments may be discussed after healing.
- Nipple reconstruction or tattooing, when desired, may be separate steps.
Feel and movement
An under-muscle reconstruction may feel firm or tight and can move with muscle contraction.
- Sensation is often reduced or altered after mastectomy.
- Early tightness may improve, but persistent discomfort needs assessment.
- Reconstruction does not restore normal breast function.
Long-term maintenance
Breast implants are not lifetime devices.
- Future surgery may be needed for rupture, scar tightening, position changes, or personal preferences.
- Silicone implants need an ongoing imaging plan to check for silent rupture.
- Cancer follow-up and implant monitoring serve different purposes.
Your outcome depends on the mastectomy, remaining tissue, cancer treatment, healing, and reconstruction plan. Ask which limitations are most relevant to you. [1]
05 · Recovery
Planning your recovery
Recovery at a glance
- Stay after surgery
- Determined by Your Surgeon
- Initial recovery at home
- Varies by Individual
- Return to desk work
- Varies by Procedure and Work Activity
- Light daily activities
- Based on Individual Recovery
- Strenuous exercise
- Based on Surgeon Clearance
Returning to work does not mean fully healed. Follow your surgeon’s instructions; strenuous activity requires clearance.
Recovery depends on whether reconstruction accompanies mastectomy, uses an expander, or involves revision. Your team's instructions should guide wound care, arm movement, support garments, and activity.
Step 1 · Day of surgery
Treatment day
The team monitors comfort, circulation to the skin, and the surgical site. You may have drains and dressings. Hospital stay and discharge timing depend on the operation and your recovery.
Step 2 · First days to weeks
Early healing
Swelling, bruising, numbness, and chest tightness are common. Follow-up visits assess healing and drain removal. You may need help with household tasks and childcare.
Step 3 · Following weeks
Gradual activity and expansion
Activity increases as your team allows. If you have an expander, filling usually begins once healing permits. Work and exercise may resume at different times.
Step 4 · Over subsequent months
Settling and next steps
Swelling and scars continue to change. Implant exchange or refinement may be planned around healing and cancer treatment. Returning to work does not mean healing is complete.
Planning everyday activities
ActivityGeneral planning contextWhat affects the plan
Desk workPlanning context: Often possible within several weeks, depending on the extent of surgery and your energy. [3]What affects it: Pain, drains, commuting, and ongoing cancer treatment may delay return.
DrivingPlanning context: Resume only when your team clears you and you can safely steer, brake, and react without impairing medication.What affects it: Chest discomfort and limited arm movement can affect control.
Lifting and upper-body exercisePlanning context: Wait for specific clearance rather than following a fixed calendar. [3]What affects it: Strain can affect healing tissues and the muscle pocket.
Walking and shoulder movementPlanning context: Your team may recommend gentle walking and a tailored shoulder-movement plan. [3]What affects it: The timing and range of movement depend on the reconstruction and any lymph node surgery.
Ask for restrictions that match your job, exercise routine, and responsibilities at home. Avoid comparing your recovery with someone who had a different reconstruction.
Before your procedure
- Review reconstruction timing with both your breast surgeon and plastic surgeon.
- Share your medical history, prior chest surgery, radiation history, and current cancer treatment plan.
- Review all medicines and supplements; change them only as directed.
- Discuss nicotine use and the team's requirements for stopping before and after surgery.
- Arrange transportation and help with meals, childcare, and lifting during early recovery.
- Get written instructions for drains, wound care, activity, follow-up, and after-hours concerns.
What if my chest feels unusually tight?
Some tightness is expected after muscle elevation or expander filling, but worsening pain, marked firmness, or a sudden change should be reported. Ask your surgical team whether compresses are appropriate and exactly how to use them.
Will I need physical therapy?
Some patients benefit from guided shoulder mobility and rehabilitation, particularly after mastectomy or lymph node surgery. Your surgeon can advise when therapy is safe and whether a referral is appropriate.
06 · Safety
Risks and what your clinician assesses
Early swelling, bruising, soreness, numbness, and chest tightness are common. Symptoms should generally improve; new or worsening changes deserve a call to your surgical team.
Bleeding or fluid buildup
Blood or fluid can collect around the reconstruction and may require drainage or another procedure.
Infection and implant loss
Infection may require antibiotics, surgery, or removal of the implant or expander. Reconstruction may need to be delayed.
Skin or wound-healing problems
Poor blood supply can cause skin breakdown or tissue loss and may expose the implant. Radiation and nicotine use can increase healing concerns.
Firmness, pain, or movement changes
Scar tissue can tighten around the implant, causing firmness or distortion. Muscle placement can also cause animation deformity, persistent tightness, or discomfort.
Implant problems and rare associated cancers
Implants can rupture, shift, or ripple. Breast implant-associated anaplastic large cell lymphoma is linked mainly to textured implants; other rare cancers have been reported in the surrounding capsule. New persistent swelling, a lump, or pain needs assessment.
Anesthesia and blood clots
Surgery carries risks from anesthesia and blood clots in the legs or lungs. Your team assesses your health and plans steps to reduce these risks.
Discuss these risks and your individual health history with your surgeon. [4]
What your clinician assesses
- Skin thickness, blood supply, scars, and available tissue coverage
- Radiation history and anticipated chemotherapy or radiation
- Medical conditions, nicotine use, medications, and clotting history
- Chest muscle activity, desired size, expectations, and willingness to have future surgery
07 · Costs
What makes up the Total Procedure & Care Cost
Compare written estimates for the same planned scope, including whether the plan covers an expander, implant exchange, support materials, and later refinements. Ask your insurer about benefits, authorization, and out-of-pocket responsibility.
Surgeon
Surgical care
Surgeon services for the planned reconstruction and any separately scheduled stages.
Ask your surgeonAsk whether implant exchange, fat grafting, nipple reconstruction, or revisions are included or billed separately.
Facility
Anesthesia and facility
Anesthesia services and operating room or hospital charges.
Ask your surgeonConfirm network status and whether each surgical stage has separate charges.
Supplies
Supplies and follow-up
Implants or expanders, tissue support materials, garments, and follow-up services as specified.
Ask your surgeonAsk about expansion visits, prescriptions, imaging, and care for complications.
TRC
Patient Services
Any separately listed education or care-coordination services.
Ask TRCAsk what is provided, whether there is a separate charge, and whether insurance applies.
Your written estimate should explain the services included, any separate charges, and payment terms.
08 · Questions
Common questions
Is subpectoral reconstruction the same as breast augmentation?
No. Both may use implants beneath the muscle, but reconstruction replaces breast contour after tissue removal. Mastectomy skin, cancer treatment, sensation changes, and staged procedures make the planning different.
Will the reconstructed breast have normal sensation?
Usually not. Mastectomy disrupts nerves, so numbness or altered sensation is common. Some sensation may return, but normal feeling cannot be promised.
Do implants need replacing on a fixed schedule?
There is no single replacement deadline for everyone. Implants are not lifetime devices, and replacement or removal may be needed for a complication or a change in your goals. Follow the recommended exam and imaging plan.
Will I still need breast cancer screening?
Your cancer team will set your surveillance plan. Routine mammograms are generally not used on a reconstructed breast after mastectomy, but symptoms may need imaging. A remaining natural breast usually continues screening, and implant integrity checks are separate.
0 consultation questions in your plan
View in My TRC workspaceMy Aesthetic Plan
Prepare for your consultation
Bring these to help your consultation:
- Confirm placement, implant or expander choice, tissue support, and expected stages.
- Confirm recovery restrictions, help at home, follow-up, and urgent contact details.
- Review the written estimate, insurance authorization, and long-term monitoring plan.
View My Aesthetic Plan
Choices stay in this visit until saving to your account completes. Nothing is sent to a clinician.
Sources
- [1]American Society of Plastic Surgeons — Breast ReconstructionPurpose and limitations of breast reconstruction, implant and tissue-based pathways, alternatives, and potential need for multiple procedures.
- [2]American Society of Plastic Surgeons — Breast Reconstruction TechniquesTissue expansion, implant reconstruction, muscle coverage, tissue support, and individualized reconstruction planning.
- [3]American Society of Plastic Surgeons — Breast Reconstruction RecoveryIndividualized postoperative instructions, drains, follow-up, gradual recovery, and activity restrictions.
- [4]American Society of Plastic Surgeons — Breast Implant SafetyImplant complications, capsular contracture, rupture, monitoring, and rare cancers associated with breast implants and their capsules.
Photographs are illustrative scenes, not patients, staff, facilities or outcomes. This information does not replace a personal assessment by your treating clinician.