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J Arthroplasty. 2011 Apr;26(3):366-374.e1. doi: 10.1016/j.arth.2010.02.006. Epub 2010 Apr 21.

Higher body mass index is not associated with worse pain outcomes after primary or revision total knee arthroplasty.

Author information

1
Department of Health Sciences Research, Mayo Clinic School of Medicine, Rochester, MN, USA.

Abstract

We assessed whether higher body mass index (BMI) is associated with higher risk of moderate-severe knee pain 2 and 5 years after primary or revision total knee arthroplasty (TKA).We adjusted for sex, age, comorbidity, operative diagnosis, and implant fixation in multivariable logistic regression. Body mass index (reference, b 25 kg/m2) was not associated with moderate severe knee pain at 2 years post primary TKA (odds ratio [95% confidence interval], 25-29.9, 1.02[0.75-1.39], P = .90; 30-34.9, 0.93 [0.65-1.34], P = .71; 35-39.9, 1.16 [0.77-1.74], P = .47; ≥ 40,1.09 [0.69-1.73], [all P values ≥ .47]). Similarly, BMI was not associated with moderate-severe pain at 5-year primary TKA and at 2-year and 5-year revision TKA follow-up. Lack of association of higher BMI with poor pain outcomes post-TKA implies that TKA should not be denied to obese patients for fear of suboptimal outcomes.

PMID:
20413245
PMCID:
PMC2930933
DOI:
10.1016/j.arth.2010.02.006
[Indexed for MEDLINE]
Free PMC Article

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