Staged Versus Simultaneous Bilateral Knee Arthroplasty

Inclusion Criteria: * Patients considering bilateral knee arthroplasty * Patients must sign the consent form * Patients must be willing to complete the study questionnaires for the duration of the study Exclusion Criteria: * Patients who require simultaneous bilateral knee replacement surgery in order to manage significant bilateral flexion or valgus knee contractures where staged procedures may result in suboptimal outcomes by increasing the risk of post-operative flexion contracture in the "first replaced" knee * patients who are unable to complete the questionnaires