title: PLATELET-RICH PLASMA IN ARTHROSCOPIC REPAIRS OF COMPLETE TEARS OF THE ROTATOR CUFF.
abstract: OBJECTIVE
  To evaluate shoulder functional results and the retear rate of arthroscopic repair of the rotator cuff augmented with platelet-rich plasma (PRP).
  
  
  METHODS
  Prospective case series with single-row arthroscopic repair of the rotator cuff augmented with PRP. Only cases of isolated supraspinatus tears with retraction of less than 3 cm were included in this series. The PRP used was obtained by apheresis. It was applied on liquid consistency in its activated form, with the addition of autologous thrombin. Patients were evaluated after 12 months of the surgical procedure. The Constant-Murley, UCLA and VAS scales were used, and the retear rate was assessed using magnetic resonance imaging (MRI).
  
  
  RESULTS
  Fourteen patients were evaluated (14 shoulders). The mean Constant-Murley score was 45.64 ± 12.29 before the operation and evolved to 80.78 ± 13.22 after the operation (p < 0.001). The UCLA score increased from 13.78 ± 5.66 to 31.43 ± 3.9 (p < 0.001). The patients' pain level decreased from a median of 7.5 (p25% = 6, p75% = 8) to 0.5 (p25% = 0, p75% = 3) (p = 0.0013) according to the VAS score. None of the patients presented complete retear. Three patients (21.4%) showed partial retear, without transfixation. Only one patient developed complications (adhesive capsulitis).
  
  
  CONCLUSIONS
  Patients submitted to arthroscopic rotator cuff repair augmented with PRP showed significant functional improvement and none of them had complete retearing.
authors.affiliation: Assistant Physician, Shoulder and Elbow Group and Trauma Group, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Eduardo Angeli
authors.initials: EA
authors.lastname: Malavolta
authors.affiliation: Assistant Physician, Shoulder and Elbow Group and Trauma Group, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Mauro Emilio Conforto
authors.initials: ME
authors.lastname: Gracitelli
authors.affiliation: Collaborating Orthopedist, Shoulder and Elbow Group, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Edwin Eiji
authors.initials: EE
authors.lastname: Sunada
authors.affiliation: Doctor's degree in Medicine; Assistant Physician, Shoulder and Elbow Group, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Benegas
authors.affiliation: Doctor's degree in Medicine; Assistant Physician, Shoulder and Elbow Group, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Flavia
authors.initials: F
authors.lastname: de Santis Prada
authors.affiliation: Doctor's degree in Medicine; Assistant Physician, Shoulder and Elbow Group, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Raul Bolliger
authors.initials: RB
authors.lastname: Neto
authors.affiliation: Chief Physician, Department of Radiology, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Marcelo Bordalo
authors.initials: MB
authors.lastname: Rodrigues
authors.affiliation: Doctor's degree in Medicine; Head, Shoulder and Elbow Group, Institute of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Arnaldo Amado Ferreira
authors.initials: AA
authors.lastname: Neto
authors.affiliation: Full Professor, Department of Orthopedics and Traumatology, USP School of Medicine, São Paulo, SP, Brazil.
authors.forename: Olavo Pires
authors.initials: OP
authors.lastname: de Camargo
keywords: Plaletet-Rich Plasma, Arthroscopy; Rotator Cuff