[The attempt of identification of the essentials risk factors of venous thromboembolism after hip arthroplasty despite of pharmacological prophylaxis].

Hip arthroplasty is of particular great risk of venous thromboembolism (VTE). The objective of this study was to identify the risk factors of VTE and the analysis of their influence on VTE appear. There were 213 patients after hip arthroplasty in the investigation group. VTE occurred in 15 patients (7.04%).We found Deep Venous Thrombosis (DVT) in eight patients (3.75%) and Pulmonary Embolism (PE) in seven (3.3%). The analysis showed statistically real dependence on patient age, obesity, veins varicoses of lower extremity and VTE occur. We also showed the significant influence of the time of the leg ultraposition time during the surgery on the frequency of VTE episodes, which hasn't been described jet in accessible literature. It is the only risk factor which may be limited by simply modification of surgery technique.