A Non-inferiority Study Comparing Two Heparin Sodium Preparations in Hip Fracture Surgery

Inclusion Criteria: In order to be enrolled in this study, eligible patients must meet all criteria below: * ICF signing; * Aged 60 to 85 years old; * Indication of hip orthopedic surgery due to fracture occurred within the last 5 days; * Normal coagulation profile or with alterations up to 25% of normal values. Exclusion Criteria: Patients who meet any of the following criteria will not be eligible for the study: * Previous hip surgery; * Fracture secondary to the presence of metastasis; * Recent traumatic brain, thoracic, or abdominal injury (up to 30 days before study start); * Recent occurrence (up to 30 days before study start) of cerebrovascular accident; * Serum concentration of hemoglobin below 9 g/dL; * Prior occurrence (in the last 5 years) of confirmed or suspected thromboembolic event; * Occurrence of major bleeding in the last 6 months (any spontaneous gastrointestinal bleeding; central nervous system bleeding; massive epistaxis, or gum bleeding; gross hematuria, or vaginal bleeding); * Confirmed or suspected blood dyscrasia; * Diagnosis of neoplasm other than in situ in the last 24 months or any active neoplasm (neoplasms in situ do not prevent patient from participating); * Liver or kidney failure; * Clinically significant gastrointestinal cardiovascular, neurological disease, or laboratory abnormalities, which at the investigator's opinion, may interfere with individual's participation in the study or with assessment of individual's response to treatment; * Hypersensitivity to heparin; * Previous use (15 days before study start) of oral anticoagulants or expected use during the study (see Appendix B); * Recent participation (previous 12 months) in a clinical trial.