Vakharia RM, Adams CT, Anoushiravani AA, et al. - This study was intended to ascertain if chronic obstructive pulmonary disease (COPD) patients undergoing primary total knee arthroplasty (TKA) have higher rates of in-hospital lengths of stay (LOS),, readmissions, venous thromboemboli (VTEs); and costs of care. Researchers distinguished COPD patients undergoing primary TKA and matched to controls in a 1:5 ratio by age, gender, and medical comorbidities. They excluded individuals with a history of VTEs or hypercoagulable states. The study population consisted of 211,378 patients [(n = 35,230) and control (n = 176,148) cohorts]. A relationship was found between COPD and higher rates of developing VTEs following primary TKA after adjusting for confounding variables. Orthopedic surgeons can apply this research to adequately counsel and educate these individuals of the potential complications which may arise following their TKA.