title: Arthroscopic assisted mini-open approach of the hip: Early multicentric experience.
abstract: BACKGROUND
  Surgical treatment of femoroacetabular impingement is becoming accepted worldwide, owing to improvements in clinical results and quality of life. In addition to treatment by surgical dislocation or arthroscopy, arthroscopic assisted mini-open approach was postulated to treat this pathology.
  
  
  OBJECTIVE
  The aim of this study was to analyze early results of the first consecutive 72 cases of femoroacetabular impingement treated using the arthroscopic assisted mini-open approach in two different centers by two surgeons trained by a senior surgeon experienced in the technique.
  
  
  METHODS
  Seventy-two consecutive cases of femoroacetabular impingement were operated in arthroscopic assisted mini-open approach technique in two different centers. After a mean follow-up time of 15 months (range 6-24 months), the Western Ontario and McMaster Universities Arthritis Index, Hip disability and Osteoarthritis Outcome Score and University of California, Los Angeles activity score, alpha angle and Wiberg angle were obtained.
  
  
  RESULTS
  In both centers, all three scores showed significantly better results at follow-up time than preoperatively. The Western Ontario and McMaster Universities Arthritis Index increased from 64.3 to 91.4 (A) and from 68.1 to 89 (B). The Hip disability and Osteoarthritis Outcome Score increased from 59.5 to 94.4 (A) and from 62.1 to 93.8 (B). The University of California, Los Angeles activity score increased from 5.2 to 8.1 (A) and from 5.3 to 8.4 (B). The alpha angle and the Wiberg angle were significantly reduced after osteoplasty. The overall complication rate was low.
  
  
  CONCLUSIONS
  Early results of this study show a good clinical and radiological outcome; therefore, the arthroscopic assisted mini-open approach can be used as an alternative in treating femoroacetabular impingement.
authors.affiliation: Clinic for Orthopaedic Surgery (in the Annastift Hospital), Hannover Medical School, Germany.
authors.forename: Marco
authors.initials: M
authors.lastname: Ezechieli
authors.affiliation: GIOMI Institute ``F. Faggiana'', Reggio Calabria, Italy.
authors.forename: Federico
authors.initials: F
authors.lastname: De Meo
authors.affiliation: University Hospital Quiron Dexeus, Barcelona, Spain.
authors.forename: Vittorio
authors.initials: V
authors.lastname: Bellotti
authors.affiliation: University Hospital Quiron Dexeus, Barcelona, Spain.
authors.forename: Carlomagno
authors.initials: C
authors.lastname: Cardenas
authors.affiliation: University Hospital Quiron Dexeus, Barcelona, Spain.
authors.forename: Emmanuele
authors.initials: E
authors.lastname: Astarita
authors.affiliation: GIOMI Institute ``F. Faggiana'', Reggio Calabria, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Cavaliere
authors.affiliation: Clinic for Orthopaedic Surgery (in the Annastift Hospital), Hannover Medical School, Germany.
authors.forename: Henning
authors.initials: H
authors.lastname: Windhagen
authors.affiliation: University Hospital Quiron Dexeus, Barcelona, Spain.
authors.forename: Manuel
authors.initials: M
authors.lastname: Ribas
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001182:Arthroscopy / Q000379:methods*; D005260:Female; D057925:Femoracetabular Impingement / Q000534:rehabilitation / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D011183:Postoperative Complications / Q000453:epidemiology; D016059:Range of Motion, Articular; D055815:Young Adult
keywords: Arthroscopic assisted mini-open approach; femoroacetabular impingement; learning curve