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  • Title: Poor WOMAC scores in contralateral knee negatively impact TKA outcomes: data from the osteoarthritis initiative.
    Author: Kahn TL, Soheili AC, Schwarzkopf R.
    Journal: J Arthroplasty; 2014 Aug; 29(8):1580-5. PubMed ID: 24805826.
    Abstract:
    While total knee arthroplasty (TKA) has been shown to have excellent outcomes, a significant proportion of patients experience relatively poor post-operative function. In this study, we test the hypothesis that the level of osteoarthritic symptoms in the contralateral knee at the time of TKA is associated with poorer post-operative outcomes in the operated knee. Using longitudinal cohort data from the Osteoarthritis Initiative (OAI), we included 171 patients who received a unilateral TKA. We compared pre-operative Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores in the contralateral knee to post-operative WOMAC scores in the index knee. Pre-operative contralateral knee WOMAC scores were associated with post-operative index knee WOMAC Total scores, indicating that the health of the pre-operative contralateral knee is a significant factor in TKA outcomes.
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