title: Outcome of Intra-operative Injected Platelet-rich Plasma Therapy During Follicular Unit Extraction Hair Transplant: A Prospective Randomised Study in Forty Patients.
abstract: BACKGROUND
  Platelet-rich plasma (PRP) therapy is finding importance in aesthetic medicine.
  
  
  OBJECTIVE
  The objective of this study was to study efficacy of PRP therapy in follicular unit extraction (FUE) hair transplant.
  
  
  METHODS
  It is a single-blind, prospective randomised study on 40 FUE hair transplant subjects, allocated in two groups (PRP and non-PRP) alternately. PRP was injected intra-operatively immediately after creating slits over the recipient area in PRP group; and normal saline in non-PRP group. Two groups were evaluated at 2, 4 and 8 weeks, 3 and 6 months of the procedure.
  
  
  METHODS
  It was done using Chi-square test and test of significance was set asP< 0.05.
  
  
  RESULTS
  In PRP group, all subjects had >75% hair regrowth at 6 months, density of >75% grafts was noticed in 12 patients at 4 weeks meaning reduced fall of transplanted hair during catagen phase. New hair growth started at 8 weeks in 16 patients and redness over recipient area completely disappeared in 19 patients at 3 months of surgery and activity in dormant follicles as fine thread like hair was noticed besides the thick transplanted hair in all subjects. In non-PRP group, four patients had >75% hair regrowth at 6 months; none showed >75% graft density at 4 weeks, and 13 subjects showed dormant follicle activity at 4 months. The number of patients having lengthier hairs was significantly more in PRP group.
  
  
  CONCLUSIONS
  Intra-operative PRP therapy is beneficial in giving faster density, reducing the catagen loss of transplanted hair, recovering the skin faster and activating dormant follicles in FUE transplant subjects.
authors.affiliation: Department of Dermatology and Aesthetic Surgery, Aura Skin Institute, Chandigarh, India.
authors.forename: Suruchi
authors.initials: S
authors.lastname: Garg
keywords: Follicular unit extraction hair transplant; hair; platelet-rich plasma therapy