 After approval from the local ethical committee, patients undergoing Total Hip Replacement THR were included in this study. Patients with previous hip surgeries and coagulation disorders were not included. All patients were submitted to a non-cemented Total Hip Replacement THR through a Hardinges approach. Before wound closure, a nurse opened an envelope containing the patient randomization: group 1 - with closed suction drainage CSD and group 2 - without closed suction drainage CSD. In the group 1, a sub-fascial suction drain was used, and kept for 24 hours. Data collected included: mid-tigh circumference after 24 hours, blood transfusion, inflammatory blood markers C-Reactive Protein CRP, Erythrocyte sedimentation rate ESR and leucogram, Harris Hip Score HHS after 3 months, and complications. Patients were followed for 3 months post operatively. 