Adipose-derived stem cells and knee osteoarthritis: New perspectives, old concerns

Figure 1 Different sources of adipose derived stem cells according to the processing. Microfragmented adipose tissue is obtained after mechanical fragmentation of the lipoaspirate. Stromal vascular fraction can be obtained by centrifugation, enzymatic digestion, which are processed in the same surgical procedure, or by cell culture, which demands longer time due to culture expansion and is more expansive, besides needing another procedure for infiltration.