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| Name | Class |
|---|---|
| Zimmer Biomet | INDUSTRY |
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In this prospective, randomized clinical trial, lipofilling of the midface with Platelet Rich Plasma (PRP) is compared with lipofilling of the midface without PRP. The main objective of this study is to investigate the effect of the addition of PRP to the autologous fat transfer on local skin quality improvement, graft survival, and recovery after the procedure.
Soft tissue augmentation by the means of lipofilling is nowadays a frequently used technique in all forms of plastic surgery. In aesthetic facial surgery it has shown to increase the rejuvenating effect, in reconstructive surgery it has earned its place in the correction of soft tissue defects and athropy.
Post-operative loss of volume of the transplanted fat remains an uncertain factor in the procedure. In current literature, there are three main hypotheses on etiology of postoperative decrease in the graft volume; 1: the viability of the injected fat cells 2: impaired graft revascularization at the target site 3: the degree of fibrosis in the target area. Mentioned factors have limited the application of (large) volume lipotransfer.
Positive effects of lipofilling on skin quality have been reported. Coleman observed softening of wrinkles, decreasing pore size and pigmentation improvements on graft sites. Possible mechanisms of the claimed regenerative properties of the lipograft are explained by the high number of adipose derived stem cells. Although frequently described in literature, no objective results have been published to this date.
In this prospective study the investigators examine new methods in preventing postoperative volume loss by the addition of Platelet Rich Plasma (PRP), derived from the patients own blood, to the injected fat graft. The added PRP contains a wide range of growth factors for instance: Epidermal growth factor (EGF), Platelet derived growth factor (PDGF-AA), Transforming growth factor (TGF-B1, TGF-B2), Fibroblast growth factor (FGF) and Vascular endothelial growth factor (VEGF).
All previously mentioned factors have shown to play a key role in tissue regeneration after tissue damage. Especially VEGF is of great interest with the ability to promote neo-angiogenesis in the graft, and thus, in theory, reducing fat necrosis and seroma formation.
Current, scientifically validated, use of PRP include treatment of chronic and soft tissue ulcerations, applications in the periodontal and oral surgery, maxillofacial surgery, orthopaedic and trauma surgery, cosmetic and plastic surgery, spinal surgery, heart bypass surgery, and burns. In all mentioned applications, PRP showed to have a positive influence on the tissue recovery and regeneration. Local PRP application in damaged animal and human skin showed to have regenerative properties. Structural changes to the dermal layer were observed in biopsies.
In this prospective, randomized clinical trial, lipofilling of the midface with PRP is compared with lipofilling of the midface without PRP. The main objective of this study is to investigate the effect of the addition of PRP to the autologous fat transfer on local skin quality improvement, graft survival, and recovery after the procedure.
The synergy achieved by lipofilling with PRP may hold many future applications in both reconstructive and aesthetic plastic surgery. Current limitation of lipofilling, especially large volume lipo transfer (allowing reconstruction in one procedure in stead of multiple with smaller volumes) and lipofilling in pour vascularised tissue (eg. fibrosis after radiation therapy) may be countered by the addition of PRP. Furthermore, the suggested local skin improvements could be used in scar revisions and burn treatment in the future, bypassing invasive surgery.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| GROUP A: PRP + | Experimental | Group A (16 subjects) will receive lipofilling enriched with 3 ml of autologous PRP ( Platelet rich plasma) with lipofilling |
|
| GROUP B: PRP - | Placebo Comparator | Group B ( 16 subjects) will receive lipofilling without addition PRP. 27 ml blood will be drawn from the patient, but will be discarded, and not turned into PRP. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Addition of PRP ( platelet rich plasma) to the lipograft | Biological | 27 ml blood will be drawn from the patient. The blood will be prepared according to the GPS System instructions (Biomet Biologics, LLC, Warsaw, Indiana USA). This desktop-size centrifuge has disposable cylinders to separate the different blood components (platelet rich plasma, PRP, platelet poor plasma, PPP, and red blood cells). The PRP is activated by adding calcium (15-volume % Ca2+ Sandoz®). creating activated Platelet Rich Plasma (aPRP). The lipograft of Group A will be enriched with 3ml of autologous PRP |
| Measure | Description | Time Frame |
|---|---|---|
| Cutometry | Postoperative skin quality measured with a Multi Probe Adapter system (Courage Khanza Colone Germany) containing several skin measurement probes (Maxameter mx18: Assessing melanin content and erythema level, Tewameter TM300: Skin barrier function and transepidermal waterloss, Cutometer MPA580: Mechanical parameters of the skin) on predetermined fixed positions in the face on predetermined times . (pre-operative, 1 week postoperative, 3 months post-operative and 1 year post-operative.) | 1 year post-operative of the last included patient, estimate is 18 months |
| Measure | Description | Time Frame |
|---|---|---|
| Panel assessment | Standardized photos will be taken pre-, and post-operatively ( at 3 months and 1 year follow-up ) The photos will be analysed by two separate panels using validated scoring systems ( an adapted Moolenburg and Strasser). Both questionnaires will focus on changes in facial volume. The panels will consist of five independent plastic surgeons and five laypersons (all blinded).(pre-operative, 3 months post-operative and 1 year post-operative.) |
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Inclusion Criteria:
Exclusion Criteria:
•• Male
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| Name | Affiliation | Role |
|---|---|---|
| Jeroen Stevens, MD, PhD | Bergman Clinics | Study Director |
| Joep Willemsen, MD | Bergman Clinics | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Bergman Clinics | The Hague | South Holland | 2516 BA | Netherlands |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 11818872 | Background | Little JW. Applications of the classic dermal fat graft in primary and secondary facial rejuvenation. Plast Reconstr Surg. 2002 Feb;109(2):788-804. doi: 10.1097/00006534-200202000-00059. | |
| 9142473 | Background | Coleman SR. Facial recontouring with lipostructure. Clin Plast Surg. 1997 Apr;24(2):347-67. |
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| Lipofilling of the midface | Procedure | The Coleman technique for fat harvesting and injection is employed but refined by utilizing a smaller, custom-made cannula for harvesting (inner diameter, 1.3 mm). The abdomen and upper legs are donor sites. Approximately two to three times more fat is harvested than the estimated amount required for the procedure. Fat is centrifuged for three minutes at the maximum speed of 3000 revolutions per minute after which the oil layer (top) and serum/infiltrate layer (bottom) are drained away, preserving the preadipocyte-rich pellet. Fat injection is performed in 1-mm aliquots with a short, curved Coleman cannula. Between 13 and 23 mL of fat is injected into the deep subcutaneous plane of each side of the face, except for the lower lid/tear trough region (where the injection is performed in the supraperiosteal/submuscular plane) and the temporal area (where the level of injection was above the superficial fascia of the temporal muscle). |
|
| 1 year post-operative of the last included patient, estimate is 18 months |
| Patient questionnaire | Analysis of a patient questionnaire sent at 4 weeks post-operative, with number of complications, recovery time (return to work/ return to social activity) and patient self-assessment (visual analogue score) as main endpoints. This questionnaire will use the standardized FACE-Q list that will be published in the fourth quarter of 2011. Use of topical skin products and sun exposure will be added to this questionnaire. | 1 year post-operative of the last included patient, estimate is 18 months |
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