According to current medicine, the results of many experiments are not the same. Overall, it is believed that the chance of all thrombus dislodgment is around 51%, but the risk of thrombus dislodgment in the right lower limb is much higher than that in the left lower limb because of the physiological curvature of the blood vessels of the right lower limb are straighter, so the risk of thrombus dislodgment will be higher. As for the intermuscular veins of the lower extremities, the risk of dislodgement was thought to be between 1% and 2% in the past, but more and more experiments are proving that the risk of thrombus dislodgement in intermuscular veins is several or even ten times higher than that of past studies.