Inclusion Criteria:- Male and female patients aged 18 years or above- Patients scheduled for elective total knee replacement Exclusion Criteria:- Active bleeding or high risk of bleeding contraindicating treatment with LMWH- Contraindication listed in the labeling or conditions precluding subject treatment with enoxaparin or requiring dose adjustment (e.g. severe renal impairment, please refer to the local label of enoxaparin in your country)- Conditions prohibiting bilateral venography (e.g. amputation of 1 leg, allergy to contrast media)