Background: The true anatomy of right-sided ligamentum teres (RSLT) has not been fully explained for a century. This study aimed to clarify the exact anatomy of RSLT.Methods: The computed tomography data of 17 651 surgical patients were observed and 76 patients with RSLT, were classified into the bilateral ligamentum teres (LT) group (type A) and three RSLT groups, (B) bifurcation type, (C) trifurcation type, and (D) independent posterior branch type.