No, the risks of blood clots are not more after robotic hip replacement surgery.  I evaluate risks of blood clots prior to the surgery.  For patients who are at high risk for developing blood clots or who are a risk of developing pulmonary embolism, I give them stronger anticoagulants in the postoperative period.  For the patient’s with extreme high risk, I use filter so that the blood clot does not travel into the lung from the periphery.