Natural hazards. Most earthquakes and volcanic eruptions do not strike randomly but occur in specific areas, such as along plate boundaries. One such area is the circum-Pacific Ring of Fire, where the Pacific Plate meets many surrounding plates. The Ring of Fire is the most seismically and volcanically active zone in the world.
For routine hip surgery, we use the blood-thinning medicine for about 4 weeks after surgery. In addition to a blood thinner, we also use early mobility, spinal anesthesia, leg exercises, foot pumps, and efficient surgery as adjunctive measures to minimize the risk of blood clots.
The issue of blood clots is a concern with hip replacement surgery. Drugs are given in the hospital to prevent clots. Also, many people have anti-coagulant shots to administer when they get home; I did for 10 days. Others have oral meds for preventing blood clots. It worked for me since I didn't have a blood clot.