Breast augmentation using the expander mammary prosthesis.

The expandable mammary prosthesis that has been successfully used for breast reconstruction has been modified for breast augmentation procedures. A new microreservoir that can be buried subcutaneously for extended periods has been developed. The unique design of this implant allows its size to be adjusted postoperatively as many times as desired, thus eliminating the possibility of a second operation to replace an implant whose size is unsatisfactory. Accurate, aesthetically satisfactory results are possible because the volume adjustments are made after the swelling has decreased and the implant has settled into position. Almost all patients offered this opportunity requested postoperative volume adjustments. The results of 59 patients are reported. The surgery was performed over a 3-year period, with the average follow-up time being 6 months. The incidence of capsular contracture has been less than 10 percent. Leakage was a problem in the original implant design; however, since the introduction of the new valve, there has been no leakage to date.