title: Hip arthroscopy outcomes, complications, and traction safety in patients with prior lower-extremity arthroplasty.
abstract: OBJECTIVE
  Given the potential for injury due to joint-distraction techniques during hip arthroscopy, this study investigated the outcomes and safety of traction during hip arthroscopy in a series of patients with a prior lower-extremity arthroplasty.
  
  
  METHODS
  Nine patients with a prior hip or knee arthroplasty (Group 1) and a matched cohort of nine additional patients with no prior hip surgery (Group 2) who underwent hip arthroscopy with traction between 2011 and 2013 were evaluated. Collected data included traction and operative times, Modified Harris Hip Scores (MHHS), Non-Arthritic Hip Scores (NAHS), and postoperative complications.
  
  
  RESULTS
  Both operative (p = 1) and traction (p = 0.11) times were similar in each group. Each group had a significant improvement in MHHS from baseline to final follow-up: from 39 to 73 (p < 0.001) in Group 1 and from 49 to 75 (p = 0.03) in Group 2. Similarly, the NAHS showed significant improvement in each group from baseline to final follow-up: from 41 to 71 (p < 0.001) in Group 1 and from 48 to 74 (p = 0.02) in Group 2. There was no difference between groups in MHHS or NAHS. There was one postoperative complication in Group 1 (a recurrent labral tear) and no complications from an existing arthroplasty or in Group 2.
  
  
  CONCLUSIONS
  Hip arthroscopy in patients with a lower-extremity arthroplasty yields improved short-term clinical outcomes without increased complications. The use of traction during hip arthroscopy is safe in this population.
authors.affiliation: NYU Hospital for Joint Diseases, Department of Orthopaedic Surgery, 301 East 17th Street, Suite 1402, New York, NY, 10003, USA, bryanbeutel@gmail.com.
authors.forename: Bryan G
authors.initials: BG
authors.lastname: Beutel
authors.forename: Jason A
authors.initials: JA
authors.lastname: Collins
authors.forename: Garret
authors.initials: G
authors.lastname: Garofolo
authors.forename: Thomas
authors.initials: T
authors.lastname: Youm
mesh_terms: D000328:Adult; D019644:Arthroplasty, Replacement, Hip; D019645:Arthroplasty, Replacement, Knee; D001182:Arthroscopy / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006621:Hip Joint / Q000601:surgery; D006801:Humans; D035002:Lower Extremity / Q000601:surgery; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D011183:Postoperative Complications / Q000453:epidemiology; D014143:Traction; D016896:Treatment Outcome
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