MATT is an abbreviation for microfragmented adipose tissue transplantation.
Microfragmented fat is produced from belly or thigh fat that has been aspirated using a plastic surgery syringe and then passed through a mechanical device which frees the portion called the 'stromal vascular fraction' (SVF) where pluripotent cells migrate off the small blood vessels where they usually reside. They move to damaged areas and facilitate healing.
A new nonenzymatic method and device to obtain a fat tissue derivative highly enriched in pericyte-like elements by mild mechanical forces from human lipoaspirates. Bianchi F, Maioli M, Leonardi E, Olivi E, Pasquinelli G, Valente S, Mendez AJ, Ricordi C, Raffaini M, Tremolada C and Ventura C. Cell Transplant. 2013;22(11):2063-77. doi: 10.3727/096368912X657855. Epub 2012 Oct 8.
Adipose Tissue and Mesenchymal Stem Cells: State of the Art and Lipogems® Technology Development. Tremolada C, Colombo V and Ventura C. Curr Stem Cell Rep. 2016; 2(3): 304–312.