Li H, Gu S, Song K, et al. - The present study was conducted to assess the influence of obesity on patients' function, pain, and complications following primary total knee arthroplasty (TKA) with an enhanced-recovery program. Researchers conducted a prospective study to include a sum of 157 patients and assigned them into one of three groups on the basis of their body mass index (BMI): normal (BMI 18.0–24.9 kg/m²), overweight (BMI 25.0–29.9 kg/m²), or obese (BMI ≥ 30.0 kg/m²). Patients' function and pain may not be influence by obesity and obesity may not elevate the incidence of complications following primary TKA. It was noted that obese patients may obtain satisfactory functional rehabilitation outcomes, but with a longer duration of rehabilitation.