[Silent thrombosis and total hip endoprosthesis]

In patients looking out for a total hip replacement so called "silent thrombosis" were recognised (8 of 168 examined patients) by the help of preoperative unilateral phlebography of the leg. Postponing these patients from operation the decrease of postoperative complication (thrombo-embolism) was only small. After critical analysis our invasive method cannot recommended as a screening. In a modified way we will continue this method in high risk patients.