Joris van Dongen

235 tSVF enriched facial lipofilling with PRP Evaluation zone one showed a higher skin elasticity in the control group with a mean of 2.7 ± 0.01 versus 2.4 ± 0.03 in the experimental group (p<0.05). On the other hand, the ratio of viscoelasticity to elastic extension (R6) was increased in the treatment group compared to controls but only for evaluation zone two at six months postoperative (p<0.05, fig. 4). Treatment did not influence net elasticity (R5). No difference in TEWL was seen between both groups at any follow-up moment for both evaluation zones (Fig. 5). Within each group, the effect of lipofilling and PRP with or without tSVF on R5, R6 and R7 was negligible compared to preoperative values. Figure 5. Changes in local TWEL for (A) evaluation zone 1 and (B) evaluation zone 2 are presented between both the experimental and control group for all timepoints. No difference was shown. TWEL = local transepidermal water loss; tSVF = tissue stromal vascular fraction. Platelet-rich plasma supplemented lipofilling with tissue-stromal vascular fraction does not improve skin quality The addition of tSVF showed no difference for the number of superficial spots, pores as well as skin texture, vascularity and pigmentation for both absolute and relative scores between both groups at any moment during follow-up (Fig. 6). The absolute number of wrinkles was reduced in the control group as compared to the experimental group at twelvemonths postoperative (p<0.05). In contrast, the relative score of wrinkles showed did not differ between groups. Within each group, PRP supplemented lipofilling with or without tSVF did not reduce the number of any parameter when preoperative and postoperative values were compared.