95; 95% CI 0.91 to 0.98) with each one step/min increase in step rate. BMD z-score was not a statistically significant risk predictor in the final multivariable model (RR 0.93, 95% CI 0.85 to 1.03). No other biomechanical variables were found to be associated with BSI risk. Low step rate is an important risk factor for BSI among collegiate cross country runners and should be considered when developing comprehensive programmes to mitigate BSI risk in distance runners.Low step rate is an important risk factor for BSI among collegiate cross country runners and should be considered when developing comprehensive programmes to mitigate BSI risk in distance runners. Leg ulcers are a chronic and disabling condition that is difficult, time-consuming and costly to treat. We report a study evaluating the efficacy of trichloroacetic acid in the treatment of venous leg ulcers. We treated 19 patients with leg ulcers with 50% trichloroacetic acid with one application per week for 6 weeks. The primary evaluation criteria was healing, assessed by measuring the surface area of the ulcer before and after treatment. We included 13 men and 6 women, with venous leg ulcers, with an average age of 57 years. The mean ulcer duration was 2.9 years. Complete healing was achieved in 2 patients, good healing in 9 patients, moderate healing in 6 patients, and poor healing in 2 patients. Our study supports the data in the literature from two published series, and suggests that 50% trichloroacetic acid would be a good therapeutic alternative with satisfactory wound healing, low cost, and absence of adverse effects.Our study supports the data in the literature from two published series, and suggests that 50% trichloroacetic acid would be a good therapeutic alternative with satisfactory wound healing, low cost, and absence of adverse effects. Nonalcoholic fatty liver disease (NAFLD) was described for the first time in 1980, and became within a few years one of the most frequent causes of chronic liver disease. However, during the last decade, many studies suggested a strong relationship between NAFLD and cardiovascular diseases including carotid atherosclerosis evoking the hypothesis that NAFLD is a factor or a marker of cardiovascular risk. In Algeria, data on this subject are rare or inexistent. The objective of our work was to study the relationship between NAFLD and atherosclerosis in an Algerian population without diabetes. It is a case-control study with a strict matching by age and sex. Non-diabetic participants between 30 and 70 years of age were consecutively included in the department of internal medicine of the public hospital of El Biar. The diagnosis of NAFLD was made by ultrasound and hepatic elasticity was assessed by FibroScan®. We collected the data of the carotid ultrasound, the carotid-femoral pulse wave velocity (cfPWV), an% CI [1.0-3.8], P=0.02), and elevated GGT (OR 2.8, 95% [1.1-7.1] were independently associated to NAFLD. Our study suggests that NAFLD is significantly associated with carotid atherosclerosis and arterial stiffness. These results may have implications in the management of patients with NAFLD in terms of cardiovascular prevention.Our study suggests that NAFLD is significantly associated with carotid atherosclerosis and arterial stiffness. These results may have implications in the management of patients with NAFLD in terms of cardiovascular prevention.We report two cases of foot ischemia combining microvascular thrombosis related to essential thrombocytemia (ET) and a proximal ulcerating atherosclerotic plaque. This suggests that myeloproliferative neoplasms could also trigger distal embolism from an unstable atherosclerotic plaque by creating a prothrombotic status. These distal ischemic events were the first ET manifestation and therefore lead to myeloproliferative neoplasm diagnosis. In ET, thrombosis event can occur with a normal platelet count. Furthermore, hemogram should be regularly controlled among JAK2 muted patients considering the frequent evolution from isolated JAK2 mutation to ET.Isolated foot vein thrombosis is an infrequently reported condition, the cause of which is still questioned. U0126 Four new cases are detailed, covering different physio-pathological situations ranging from plantar vein to Lejars' sole thrombosis. They are compared to the literature. The common vein altered in most of the cases is the first metatarsal interspace perforator, which is hypothesized as the area of the onset of many cases of foot vein thrombosis. Diagnostic workup could reveal neoplasia, inflammatory diseases, or coagulation abnormality. There is no consensus regarding plantar vein thrombosis treatment, and conservative therapy, non-steroidal anti-inflammatory drugs and anticoagulant therapy have been reported.The social and economic environment has become a major determinant of cardiovascular health. The objective of our study was to assess socio-economic insecurity in patients with symptomatic PAD. The PRECAR study was a non-interventional prospective cohort study. Patients were recruited from the Vascular Medicine and Surgery Departments of Grenoble-Alpes University Hospital or during a consultation as part of the therapeutic education program "On the move! Better understanding and better living with arterial disease". The analysis of socio-economic and environmental data was based on the EPICES score (a reliable index used to measure individual deprivation) and INSEE parameters (level of education and socio-professional category). Cardiovascular risk factors were also recorded. 150 patients with symptomatic PAD were included between November 2017 and June 2018. 84% were men. In our population 54% (CI95% 45.7 - 62.1) were in a precarious situation compared to 40% (CI95% 39.8 - 40.2) in the general population, according to the EPICES score (P less then 0.001). Levels of education were low and patients with a baccalaureate or higher education degree were under-represented. Executives, intellectuals and intermediate professions were also under-represented in the PAD population. This data opens new perspectives on the social characterisation of patients that may contribute to improving the outcomes of patients with peripheral vascular disease.