Harato K, Yagi M, Fujita N, et al. - Using routinely collected data, researchers carried out a retrospective study to evaluate disease features of lumbar spinal canal stenosis as well as lower limb osteoarthritis, as well as to examine surgical times based on BMI in lumbar decompressive surgery and lower limb arthroplasties. The study sample consisted of 1,161 patients with a diagnosis of lumbar canal stenosis (LCS), hip osteoarthritis and knee osteoarthritis (KOA). According to findings, BMI was significantly affected by the disease characteristics of the KOA category and the LCS category, and TKA and LAM surgical times were significantly longer for overweight or obese patients, while BMI affected total hip arthroplasty less in terms of disease characteristics and surgical time.