GSTM1 and deep vein thrombosis: The main results of the current study include the following: (1) tourniquet application could decrease intraoperative blood loss, shorten operation duration, and increase cement mantle thickness significantly; (2) tourniquet application was significantly associated with increased postoperative pain intensity, decreased full ROM/flexion ROM/extension ROM, poorer knee function, increased knee welling, and increased LOS; (3) no significant difference was found for postoperative draining volume, total blood loss, transfusion rate, change of Hb level, and risks of DVT and all complications.