title: PRP IN THE TREATMENT OF TROCHANTERIC SYNDROME: A PILOT STUDY.
abstract: OBJECTIVE
  To compare the efficacy of platelet rich plasma (PRP) against corticosteroid on the treatment of trochanteric pain syndrome.
  
  
  METHODS
  From July 2011 to November 2012, eighteen patients (20 hips) with trochanter pain syndrome were randomized in two groups and treated with platelet rich plasma or triamcinolone infiltration guided by ultrasound. Pain and function were evaluated prior to the intervention and after 10, 30 and 60 days, through the Facial Expressions Scale for Pain and the Western Ontario McMaster and Harris Hip Score questionnaires. Inter-group analysis was performed by Student t-test and intragroup analysis by ANOVA, followed by Bonferroni post hoc test. Statistical significance was set at p <0.05.
  
  
  RESULTS
  There was no difference between the groups. The triamcinolone group showed pain reduction (p=0.004) and improved function (p=0.036) through the Harris Hip Score questionnaire at 10, 30 and 60 days after treatment, when compared with the pre- intervention period. The platelet rich plasma group showed no statistical improvement in any of the variables.
  
  
  CONCLUSIONS
  Up to 60 days, PRP infiltration has no influence on pain relief and function improvement in trochanteric syndrome treatment.Level of Evidence II, Prospective Comparative Study.
authors.affiliation: . Irmandade da Santa Casa de Misericórdia de São Paulo, Department of Orthopedics and Traumatology, São Paulo, SP, Brazil.
authors.forename: Arthur de Góes
authors.initials: AG
authors.lastname: Ribeiro
authors.affiliation: . Irmandade da Santa Casa de Misericórdia de São Paulo, Department of Orthopedics and Traumatology, São Paulo, SP, Brazil.
authors.forename: Walter
authors.initials: W
authors.lastname: Ricioli
authors.affiliation: . Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, SP, Brazil.
authors.forename: Alice Roxo Nobre Sousa E
authors.initials: AR
authors.lastname: Silva
authors.affiliation: . Irmandade da Santa Casa de Misericórdia de São Paulo, Department of Orthopedics and Traumatology, São Paulo, SP, Brazil.
authors.forename: Giancarlo Cavalli
authors.initials: GC
authors.lastname: Polesello
authors.affiliation: . Irmandade da Santa Casa de Misericórdia de São Paulo, Department of Orthopedics and Traumatology, São Paulo, SP, Brazil.
authors.forename: Rodrigo Pereira
authors.initials: RP
authors.lastname: Guimarães
keywords: Bursitis; Femur; Injections; Platelet-rich plasma; Tendinopathy