As the demographic of the patient population requiring revision total knee arthroplasty (rTKA) continues to expand, varying preoperative conditions and activity levels need to be taken into consideration when analyzing postoperative outcomes. Factoring in preoperative activity levels can help manage the expectations of patients. The purpose of this study was to analyze the outcomes of low and high activity patients receiving a contemporary rTKA. One hundred and eighty rTKA patients enrolled in a prospective, multicenter study were evaluated through 2 years postoperative. Patients were divided into groups based on preoperative activity level using the Lower Extremity Activity Scale (LEAS). Patients scoring between 1–7 were classified as ‘Low Activity’ (LA, N=104) and patients scoring 8–18 were classified as ‘High Activity’ (HA, N=76). Clinical and patient-reported outcomes were evaluated, with an additional quality of life analysis completed utilizing SF-6D scores obtained by transforming SF-36 scores through a method described by Brazier et al. and analyzed for effect size.INTRODUCTION
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