Intensive Diet vs Knee Arthroplasty for Knee Osteoarthritis

This study addresses this question by comparing two recommended and potentially competing strategies in the management of obese knee OA patients: Strategy A. A 3-months waiting list followed by a 12-week Intensive supervised diet intervention; Strategy B. A 3-months waiting list followed by surgical knee arthroplasty including standard post-operative rehabilitation. The primary outcome is taken at week 38 from inclusion (baseline) corresponding to 6 months after treatment start (either surgery or intensive diet program). Outcomes are also taken at baseline, week 13 (before treatment start), week 26 (end of diet program), week 38 (primary endpoint), and week 64.