s age, medical condition, history of previous clots, type of surgery, length of surgery, necessity for strict bed rest after the procedure, etc. Techniques
for preventing clots after surgery run from from the use of alternating compression leg apparatus during and after surgery to low dose anticoagulation. Early ambulation after a procedure is also useful, along with avoiding a long interval in a cramped knee flexed position (i.e. an long flight or car trip).