Polypropylene breast implant
Maxi Mounds , entertainer with polypropylene breast implants
Polypropylene breast implants , also called string breast implants, are a form of breast implants that contain polypropylene . They were developed by Gerald W. Johnson. Because of a number of medical complications , these breast implants have been banned in the European Union and the United States.
The implants absorb body fluid and allow the breasts to continue to grow, the result being "extreme, almost cartoon-like breast sizes". String implants were only implanted in a very short time before they were banned by the FDA in 2001 and then withdrawn from the market. Polypropylene implants produced the largest recorded increases in breast size, more than would be possible through surgery alone.