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Debilitating pain associated with knee osteoarthritis (OA) often leads patients to seek and complete total knee arthroplasty (TKA). To date, few studies have evaluated the relation of functional impairment to the risk of TKA, despite the fact that OA is associated with functional impairment.

Functional Impairment Is a Risk Factor for Knee Replacement in the Multicenter Osteoarthritis Study