title: ARTHROSCOPIC TREATMENT OF FEMOROACETABULAR IMPINGEMENT.
abstract: OBJECTIVE
  The purpose of this study is to evaluate the short-term follow-up results of arthroscopic treatment of femoroacetabular impingement. Our hypothesis is that arthroscopic treatment results are favorable.
  
  
  METHODS
  Between August 2003 and August 2007, 28 hips had femoroacetabular impingement treated by hip arthroscopy. The mean age was 34 years, with mean follow-up period of 27 months. Clinical results were graded with the modified Harris hip score, which was measured pre- and postoperatively. Patients had also their internal rotation analyzed. These parameters were calculated by using Wilcoxon's t test for analysis of nonparametric paired samples performed.
  
  
  RESULTS
  The mean preoperative Harris Hip Score was 54.2, improving to 94.8 postoperatively (p<0,001). The mean increase was 37.5 points. We had 4 good results (15%) and 24 excellent results (85%). Preoperatively, the patients had a mean internal rotation of 17°, and, postoperatively, 36°. The average internal rotation increase was 19° (p<0,001).
  
  
  CONCLUSIONS
  The arthroscopic treatment of femoroacetabular impingement presents satisfactory results.
authors.affiliation: Assistant Professor, School of Medical Sciences, Santa Casa de Sāo Paulo, FCMSCSP. Assistant Professor, Hip Group, FCMSCSP.
authors.forename: Giancarlo C
authors.initials: GC
authors.lastname: Polesello
authors.affiliation: Orthopedist, Former Intern of the Hip Group, FCMSCSP.
authors.forename: Marcelo C
authors.initials: MC
authors.lastname: Queiroz
authors.affiliation: Assistant Professor, FCMSCSP; Head, Hip Group, FCMSCSP.
authors.forename: Nelson K
authors.initials: NK
authors.lastname: Ono
authors.affiliation: Assistant Professor, FCMSCSP; Senior Member, Hip Group, FCMSCSP.
authors.forename: Emerson K
authors.initials: EK
authors.lastname: Honda
authors.affiliation: Professor, FCMSCSP; Assistant, Hip Group, FCMSCSP.
authors.forename: Rodrigo P
authors.initials: RP
authors.lastname: Guimarāes
authors.affiliation: Orthopedist, Assistant, Hip Group, FCMSCSP.
authors.forename: Walter Ricioli
authors.initials: WR
authors.lastname: Junior
keywords: Arthroscopy; Osteoarthritis, hip/diagnosis; Osteoarthritis, hip/etiology Osteoarthritis, hip/therapy; Osteoarthritis, hip/pathology