title: Intra-articular adhesions following hip arthroscopy: a risk factor analysis.
abstract: OBJECTIVE
  The purpose of this study was to evaluate possible risk factors for symptomatic adhesions after hip arthroscopy.
  
  
  METHODS
  Data were analysed from hip arthroscopies performed between 2005 and 2009. Only primary hip arthroscopies were included. Data collected included demographics, primary treatment, rehabilitation, revision surgery, and presence of adhesions at revision.
  
  
  RESULTS
  One thousand two hundred and sixty-four hips in patients 18 years or older underwent primary hip arthroscopy during the defined period. Eight underwent revision hip arthroscopy by a different surgeon. Patients under 30 years of age were 5.9 times more likely to be in the adhesion group [95 % CI 3.1-11.5]. Patients who underwent microfracture were 3.1 times less likely to have adhesions compared to patients who did not [95 % CI 1.1-8.2]. Patients who did not receive circumduction therapy were 4.1 times more likely to have adhesions compared to those who performed circumduction exercises [95 % CI 1.25-11.0].
  
  
  CONCLUSIONS
  Risk factors for adhesions following hip arthroscopy identified were age under 30, modified Harris Hip score under 50, no microfracture performed, and rehabilitation without circumduction.
authors.affiliation: Steadman Philippon Research Institute, 181 W. Meadow Dr. Suite 1000, Vail, CO, 81657, USA.
authors.forename: S Clifton
authors.initials: SC
authors.lastname: Willimon
authors.forename: Karen K
authors.initials: KK
authors.lastname: Briggs
authors.forename: Marc J
authors.initials: MJ
authors.lastname: Philippon
mesh_terms: D000328:Adult; D001182:Arthroscopy / Q000009:adverse effects*; D005163:Factor Analysis, Statistical; D005260:Female; D006621:Hip Joint / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007592:Joint Diseases / Q000209:etiology / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D000267:Tissue Adhesions / Q000209:etiology / Q000473:pathology*; D055815:Young Adult