1)mailuoshutong脉络舒通颗粒 1.Objective To Observe the efficacy and safety of with mailuoshutong and low molecular weight heparin to prevent lower extremity deep venous thrombosis for total knee and hip arthroplasty.目的观察脉络舒通颗粒联合低分子肝素预防全膝、髋关节置换术后下肢深静脉血栓(deep venous...