Defining the relationship between obesity and total joint arthroplasty

Obes Res. 2001 Mar;9(3):219-23. doi: 10.1038/oby.2001.24.


Objective: The purpose of this study was to examine the relationship between obesity and patient-administered outcome measures after total joint arthroplasty.

Research methods and procedures: A voluntary questionnaire-based registry contained 592 primary total hip arthroplasty patients and 1011 primary total knee arthroplasty patients with preoperative and 1-year data. Using logistic regression, the relationships between body mass index and the several outcome measures, including Short Form-36 and Western Ontario and McMaster Universities Osteoarthritis Index, were examined.

Results: There was no difference between obese and non-obese patients regarding satisfaction, decision to repeat surgery, and Delta physical component summary, Delta mental component summary, and Delta Western Ontario and McMaster Universities Osteoarthritis Index scores (p > 0.05 for all). Body mass index was associated with an increased risk of having difficulty descending or ascending stairs at 1 year (odds ratio, 1.2 to 1.3).

Discussion: Obese patients enjoy as much improvement and satisfaction as other patients from total joint arthroplasty.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Arthroplasty, Replacement, Hip* / psychology
  • Arthroplasty, Replacement, Hip* / statistics & numerical data
  • Arthroplasty, Replacement, Knee* / psychology
  • Arthroplasty, Replacement, Knee* / statistics & numerical data
  • Body Mass Index
  • Female
  • Humans
  • Male
  • Middle Aged
  • Obesity*
  • Patient Satisfaction
  • Surveys and Questionnaires
  • Treatment Outcome