Maximum Acceptable Risk of complication in total Knee Arthroplasty (MARKA) Study: Using discreet choice experiments to elicit patient and surgeon perception of acceptable risk in Total Knee Arthroplasty

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Patient expectation is the strongest predictor of satisfaction following total knee replacement. Dissatisfaction with surgery is reported in approximately 1 in 5 patients undergoing knee replacement. Unrealistic patient expectations and uninformed perceptions of potential benefits, risks and limitations of surgery lead to dissatisfaction in many cases. This study will examine the “risk-benefit” preferences in patients and surgeons considering total knee replacement as a treatment option for end-stage osteoarthritis.