The Impact of Pre-Operative Weight Loss on Incidence of Surgical Site Infection and Readmission Rates After Total Joint Arthroplasty
Maria C.S. Inacio, PhD, Donna Kritz-Silverstein, PhD, Rema Raman, PhD, Caroline A. Macera, PhD, Jeanne F. Nichols, PhD, Richard A. Shaffer, PhD, Donald C. Fithian, MD
J Arthroplasty Volume 29, Issue 3 , Pages 458-464.e1, March 2014
Published online 09 September 2013.
Abstract
This study characterized a cohort of obese total hip arthroplasty (THA) and total knee arthroplasty (TKA) patients (1/1/2008–12/31/2010) and evaluated whether a clinically significant amount of pre-operative weight loss (5% decrease in body weight) is associated with a decreased risk of surgical site infections (SSI) and readmissions post-surgery. 10,718 TKAs and 4066 THAs were identified. During the one year pre-TKA 7.6% of patients gained weight, 12.4% lost weight, and 79.9% remained the same. In the one year pre-THA, 6.3% of patients gained weight, 18.0% lost weight, and 75.7% remained the same. In TKAs and THAs, after adjusting for covariates, the risk of SSI and readmission was not significantly different in the patients who gained or lost weight pre-operatively compared to those who remained the same.
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