When a silicone breast implant ruptures it usually does not deflate, yet the filler gel does leak from it, which can migrate to the implant pocket; therefore, an intracapsular rupture (in-capsule leak) can become an extracapsular rupture (out-of-capsule leak), and each occurrence is resolved by explantation. Although the leaked silicone filler-gel can migrate from the chest tissues to elsewhere in the woman's body, most clinical complications are limited to the breast and armpit areas, usually manifested as granulomas (inflammatory nodules) and axillary lymphadenopathy (enlarged lymph glands in the armpit area).[41][42][43]
There are cases where some patients are wanting a very unnatural or obviously augmented look. This can be created by placing the implant over the muscle, as it allows you to really define the sharp edges of the implant, which in turn will create a very obviously implanted look. Aside from that, the advantages of going over the muscle can come in terms of the fact that you are preserving the strength of the pectoralis muscle. Some patients who are athletes or weight lifters, may want to ensure that they are maintaining 100% of their power and strength, therefore if the breast implant is placed over the muscle it allows them to maintain their ability to bench press at their highest weight. Furthermore, there are some patients which due to their anatomy, it is required to place the implant over the muscle. For example, if they had a previous breast augmentation where the breast implants was placed under the muscle that left significant scarring or if they had a severe capsular contraction, it would be recommended that they switch the location of the implant. Another benefit to having the breast implant placed about the muscle is that it can offer a more defined round shape if the patient’s breast has tissue that takes on a different shape.
Despite their differences, most patients who have these procedures to attain their specific goals are highly satisfied with their results. Both procedures are relatively easy to recover from and require 2 to 4 weeks of downtime. Even though both procedures address different issues, it is not unusual for women to encounter both excess breast tissue and sagging. Commonly, these women get the best results by receiving a combination of breast reduction and breast lift procedures. If you are considering a breast reduction, breast lift or a combination of the two, do your research and find a skilled board-certified plastic surgeon to discuss which one is right for your specific goals. 

Since experienced surgeons are aware of these issues with saline breast implants and their need for eventual replacement, they opt to place them under the chest muscle. The chest muscle works as an extra layer of tissue over the implant, which makes for a smoother transition from the chest wall to the implant. The finished product is a more seamless transition versus a more visible and abrupt change when the implant is not placed below the pectoral muscle. As for gel breast implants, they can also be safely placed below the pretorial muscle if that is a viable option for the patient since replacement and wrinkling is less common with this type of implant.
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