The purpose of this study is to assess if 10 mg Bay 59-7939, taken once daily as a tablet, is safe and prevents blood clot which may form after a knee replacement operation.

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)