What pre-pectoral placement means
Pre-pectoral means in front of the pectoralis major muscle. Instead of lifting the muscle and placing the implant beneath it, the implant sits directly under the skin and fat of the mastectomy flap, on top of the muscle. This keeps the chest wall muscle completely undisturbed.
The technique has become more widely used as surgical techniques and support materials like acellular dermal matrix (ADM) have improved. It is now a well-established option for suitable patients.
How it differs from sub-pectoral placement
The main practical differences you will notice are:
- No animation deformity. Because the implant is not under the muscle, it does not move when you flex your chest. This is one of the most valued benefits for patients who are physically active.
- Faster recovery. The muscle is not disturbed, so there is less post-operative discomfort and a quicker return to arm movement.
- Less post-operative pain in most patients in the early weeks.
- The muscle retains its full function and strength.
When pre-pectoral reconstruction is recommended
Pre-pectoral placement works best when the mastectomy flap (the skin and tissue left after the breast is removed) is thick enough to support and conceal the implant adequately. Patients who are good candidates include:
- Those with a well-vascularised, adequately thick skin flap after skin-sparing mastectomy
- BRCA-positive patients having prophylactic (risk-reducing) mastectomy, where the skin is often healthy and undamaged
- Patients who want to avoid animation deformity entirely
- Patients where preserving full chest muscle function is important
The role of acellular dermal matrix (ADM)
ADM is a biological tissue support material used to wrap or support the implant in the pre-pectoral position. It provides an additional layer of coverage in front of the implant and helps prevent the implant from shifting or becoming visible through the skin. ADM is derived from donated tissue that has been processed to remove cells, leaving a structural scaffold that your own tissue eventually grows into.
Not every pre-pectoral case requires ADM, but it is commonly used to improve the support and appearance of the reconstruction.
Pre-pectoral reconstruction is not suitable for all patients. Thin skin flaps, previous radiation to the chest wall, or compromised skin after mastectomy may make sub-pectoral or flap-based reconstruction a better choice. Dr. Shruthi assesses each patient individually.
Candidates and non-candidates
Patients who may not be suitable for pre-pectoral reconstruction include those with very thin mastectomy flaps, significant obesity (where skin circulation can be compromised), previous chest wall radiotherapy, or active smokers. These factors affect how well the skin flap heals and supports the implant.
Recovery
Recovery is generally faster than sub-pectoral reconstruction because the chest muscle is not divided or lifted. Most patients return to light activity within two to three weeks. There is typically less restriction on arm movement in the early post-operative period. A supportive bra is worn for several weeks while the implant settles into position.