Surgical and radiologic anatomy : SRA
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We conducted this prospective, observational study using ultrasound to describe the neuro-vascular relationships at the femoral crease. In particular, we sought to identify and describe the incidence of vascular structures lying lateral to the femoral artery at this level, and the frequency with which needle insertion would require adjustment to avoid contact with these vessels during femoral nerve blockade (FNB). ⋯ Ultrasound scanning at the femoral crease in preparation for FNB reveals branches lying lateral to the main femoral artery in a significant proportion of patients, presenting a significant risk of needle contact with one of these vessels. The use of ultrasound likely reduces the risk of vascular trauma in this setting.