A deep vein thrombosis (DVT) is a blood clot that occurs in the veins of the body, especially in the lower extremities (legs). DVTs can occur without symptoms, but in many cases the affected extremity will be painful, swollen, red, and warm, and the superficial veins may be engorged. Should you develop these symptoms you should seek the evaluation of a physician immediately.The most serious complication of a DVT is that the clot could dislodge and travel to the lungs, which is called a pulmonary embolism (PE). DVT is a medical emergency, so, all limb swellings, however trivial, should be regarded as a DVT until proven otherwise. Untreated lower extremity DVT has a 3% risk of PE that may result in death. DVTs associated with upper extremity are extremely rare.
Risk factors for developing a DVT include advanced age, obesity, infection, immobilization, trauma, lower extremity surgery, hormonal contraception use, tobacco use, air travel, active cancer, hereditary coagulation (clotting) disorders and a history of DVT.
Having an injury to your lower extremity and being in a boot can increase your risk of developing a DVT and in my medical opinion, you should take an aspirin daily (325mg) during your recovery from the injury unless contraindicated by an allergy or other medical condition. Please consult your physician for any questions.