title: Prophylaxis of postoperative embolism.
mesh_terms: D004617:Embolism / Q000517:prevention & control*; D006493:Heparin / Q000008:administration & dosage; D006615:Hip / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control*
chemical_list: D006493:Heparin