title: Morbidly Obese vs Nonobese Aseptic Revision Total Hip Arthroplasty: Surprisingly Similar Outcomes.
abstract: BACKGROUND
  We aimed to compare the outcomes between matched morbidly obese (BMI ≥ 40 kg/m(2)) and nonobese (BMI <30 kg/m(2)) patients undergoing first-time aseptic revision THA with at least 4 years of follow-up.
  
  
  METHODS
  Groups were matched 1:1 using sex, age, and date of revision surgery (123 patients in each group).
  
  
  RESULTS
  The overall incidence and risk of complication, reoperation, and re-revision were similar between groups. Morbidly obese patients were more likely to dislocate (odds ratio [OR], 3.3; P = .03), but were less likely to develop polyethylene wear (OR, 0.1; P = .04) and aseptic loosening (OR, 0.3; P = .03).
  
  
  CONCLUSIONS
  Quality outcome measures such as hospital readmission were not addressed by this study and could be the basis for future studies.
  
  
  METHODS
  level III, prognostic study.
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Chad D
authors.initials: CD
authors.lastname: Watts
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Houdek
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Eric R
authors.initials: ER
authors.lastname: Wagner
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: David G
authors.initials: DG
authors.lastname: Lewallen
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
authors.forename: Tad M
authors.initials: TM
authors.lastname: Mabry
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D008910:Minnesota / Q000453:epidemiology; D009767:Obesity, Morbid / Q000150:complications*; D020959:Polyethylene; D011183:Postoperative Complications / Q000453:epidemiology* / Q000209:etiology; D011475:Prosthesis Failure; D012086:Reoperation / Q000706:statistics & numerical data*; D012189:Retrospective Studies
chemical_list: D020959:Polyethylene
keywords: aseptic; complication; implant survival; morbid obesity; revision hip arthroplasty