Addition of Platelet Rich Plasma (PRP) in Microfat Lipofilling (MG) in the Treatment of Cranial Flap Scars: A Randomized, Double-blind, Superiority Study

Inclusion Criteria: * Men and women of age * Desiring a procedure with an aesthetic aim * Having a minimum of 6 months after the neurosurgical procedure for cranial flap replacement * In the absence of need for neurosurgical revision, * Informed consent signed by the patient * Be affiliated with the health insurance Exclusion Criteria: * Contraindication to MRI * Patients who have already undergone lipofilling at the site of interest before inclusion in the study. * Contraindication to general anesthesia * Considered neurosurgical revision * Carcinological neurosurgery (With the exception of benign tumors with complete excision and/or non-evolving residue requiring no further treatment) * Healing of the site of interest not acquired at the 1st consultation * BMI \> 35 * Thrombocytopenia\< 150 G/L * Thrombocytosis \> 450 G/L * Known thrombopathy * HB anemia \< 10g/dl * Active HIV1 and 2 infections, Agp24, HCV Ac, HbS Ag and AcHbc, HTLV I and II Ac, TPHA * Chronic treatment with corticoids or NSAIDs or anticoagulant * Immune deficiency * Infectious diseases * Minors * Pregnant or breastfeeding women * Patient participating in another clinical trial