Microthane® is a micropolyurethane foam coated shell surface for breast implants. At POLYTECH, we use extra-fine polyurethane foam, which is approved for long-term implantation. It has an average roughness of 1500 microns.
For textured or smooth implants, the body forms a large capsule around the foreign body. When the tissue grows into the foam, however, many small capsules, so-called microcapsules, are formed; this reduces the risk of capsular fibrosis / capsular contracture.
A comprehensive long-term study shows that after eight years in the body, the capsular fibrosis rate of micropolyurethane foam implants is 15% lower than that of textured implants and 30% lower than that of smooth-walled implants (1). Recent studies show a reduction in risk not only in primary augmentation, but also in the case of a two-stage expander-implant reconstruction, even with radiation (2)
(1) Handel, 2006
(2) Pompei, Stefano, et al: Polyurethane Implants in 2-Stage Breast Reconstruction: 9-Year Clinical Experience. Aesthetic Surgery Journal, Volume 37, Issue 2, 1 February 2017, Pages 171-176, doi.org/10.1093/asj/sjw183