Preclinical models have provided important insights into the pathogenesis of OA and potential pathways for therapeutic intervention, including adenosine. Ticagrelor and clopidogrel are both used in patients with coronary artery disease, but only ticagrelor increases extracellular adenosine levels. In this study, treatment with ticagrelor was associated with a 29% lower risk of developing OA than treatment with clopidogrel over five years of follow-up.