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Effect of Bariatric Surgery on Risk of Complications After Total Knee Arthroplasty

Key Points Question Does bariatric surgery reduce complication risk after total knee arthroplasty (TKA) in patients with severe obesity? Findings In this randomized clinical trial of 82 adults aged 65 years and younger with class II obesity, those who were scheduled to undergo TKA experienced fewer joint surgery complications after undergoing a bariatric procedure, compared with those who underwent TKA without weight loss intervention. Meaning The findings suggest that people with severe obesity and knee osteoarthritis should seek to lose weight before considering TKA, and weight loss appears to reduce the complications of joint surgery.