Defining the relationship between obesity and total joint arthroplasty

UMMS Affiliation

Center for Outcomes Research; Department of Orthopedics and Physical Rehabilitation

Publication Date


Document Type



Adult; Aged; Aged, 80 and over; *Arthroplasty, Replacement, Hip; *Arthroplasty, Replacement, Knee; Body Mass Index; Female; Humans; Male; Middle Aged; *Obesity; Patient Satisfaction; Questionnaires; Treatment Outcome


Health Services Research | Orthopedics


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.

DOI of Published Version



Obes Res. 2001 Mar;9(3):219-23. Link to article on publisher's site

Journal/Book/Conference Title

Obesity research

Related Resources

Link to Article in PubMed

PubMed ID