LMWH vs Aspirin for VTE Prophylaxis in Orthopaedic Oncology

Aspirin and low molecular weight heparin (LMWH) are both commonly employed pharmacologic methods of venous thromboembolism (VTE) prophylaxis after orthopaedic surgery. Data comparing these two methods of VTE prophylaxis in patients undergoing pelvic/lower extremity orthopaedic surgery for malignancy are lacking, however, as compared to the data and guidelines present for VTE chemoprophylaxis after joint arthroplasty and hip fracture surgery. In this clinical trial, our specific aim is to compare the post operative incidence of VTE between patients receiving aspirin and LMWH after pelvic/lower extremity orthopaedic oncology procedures.

NCT Number	NCT03244020
Lead Sponsor	Massachusetts General Hospital Collaborators: Johns Hopkins University, University of Missouri-Columbia
Conditions	Sarcoma, Soft Tissue Sarcoma, Bone Sarcoma, Bone Metastases, Venous Thromboembolism, Hematoma, Anticoagulant-induced Bleeding
Enrollment	2,868 participants
Start Date	2018-02-16
Primary Completion	2027-12-31 (estimated)
Study Completion	2028-07-01 (estimated)
Updated on ClinicalTrials.gov	2025-10-03