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Objective: To study the impact of body mass index (BMI) on the outcomes of total knee arthroplasty (TKA) in primary osteoarthritis (OA) patients with CR/PS TKS. Methods: We conducted a retrospective analysis of data from the ongoing, prospective Freedom 400 study, involving 259 patients. Patients were grouped based on the BMI (WHO categorization): Cohort 1 (normal weight, BMI 18.5 kg/m2 to 25.00 kg/m2), Cohort 2 (overweight patients, BMI 25.00 kg/m2 to 29.99 kg/m2), and Cohort 3 (class 1 and 2 obese patients, BMI 30.00 kg/m2 to 39.99 kg/m2). The primary endpoint was implant survivorship and cumulative revision rates. Secondary endpoints included Knee Society score (KSS), Range of Motion (ROM), Western Ontario and McMaster Universities Arthritis Index (WOMAC) scores, SF-36 questionnaire for assessing quality of life (QoL), and radiographic analysis up to a 3-year follow-up period. Results were considered significant at p |
