• Allan Y Wu and David M Morrow.
• J Transl Med. 2013 Jan 1;11:136.

BackgroundIn an attempt to engineer a regulatory compliant form of cell assisted lipotransfer in the U.S., the authors developed Autologous Fat Transfer with In-situ Mediation (AIM) for reconstruction of a refractory surgical scar.MethodsThis method incorporates use of accepted standard procedures like autologous fat grafting and intradermal injection of NB6 collagenase to release adipose stem cells from a naturally occurring high concentration stromal vascular fraction (SVF) fat graft. To prevent off-target effects of collagenase, a hyaluronic acid and serum deactivation barrier is placed circumferentially around the operative site.FindingsThis novel protocol was well tolerated by the patient and improved scar appearance, mobility and texture. Deepest scar contour defect correction was 80% and 77% at 4 and 12 weeks respectively.ConclusionAIM appears to be a practical and viable option for scar reconstruction requiring small to moderate volume correction.

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