title: Evaluation of arthroscopic treatment of posterior shoulder instability.
abstract: OBJECTIVE
  To provide data for the analysis of arthroscopy as a method of surgical treatment for shoulder and discuss its actual indications and preliminary results.
  
  
  METHODS
  We evaluated 15 patients submitted to reverse Bankart arthroscopic surgery. We used the UCLA (University of California at Los Angeles) score to measure the results before surgery and 12 months thereafter.
  
  
  RESULTS
  The average UCLA score changed from 26.67±0.25 (SD 0.97) before surgery to 34.20±0.53 (SD 2.04) after surgery. The effectiveness of surgery was 93%. In five cases loose bodies were found. A patient undergoing remplissage was evaluated separately. The data did not change after 24 months post-surgery.
  
  
  CONCLUSIONS
  The arthroscopic treatment of posterior shoulder instability and posterior dislocation of the shoulder has been proved feasible and results in our series followed the same trends as in the literature. Level of Evidence III, Transversal Retrospective Study.
authors.affiliation: Advanced Study Center on Orthopedics and Neurosurgery, Hospital Santa Catarina, São Paulo, SP, Brazil.
authors.forename: José Carlos
authors.initials: JC
authors.lastname: Garcia
authors.affiliation: Pontifícia Universidade de Campinas, Campinas, SP, Brazil.
authors.forename: Lucas Russo
authors.initials: LR
authors.lastname: Maia
authors.affiliation: Pontifícia Universidade de Campinas, Campinas, SP, Brazil.
authors.forename: Juliano Rocha
authors.initials: JR
authors.lastname: Fonseca
authors.affiliation: Pontifícia Universidade de Campinas, Campinas, SP, Brazil.
authors.forename: José Luís Amim
authors.initials: JL
authors.lastname: Zabeu
authors.affiliation: Advanced Study Center on Orthopedics and Neurosurgery, Hospital Santa Catarina, São Paulo, SP, Brazil.
authors.forename: Jesely Pereira Myrrha
authors.initials: JP
authors.lastname: Garcia
keywords: Arthroscopy; Joint instability; Shoulder dislocation; Shoulder joint/injuries