Fig. 1. Appearance of the femoral nerve on ultrasound before injection of local anesthetic (  A ) and after completion of injection of local anesthetic (  B ) (shows swelling of the nerve). FA = femoral artery; FI = fascia iliaca; FN = femoral nerve; NP = needle path. 

Fig. 1. Appearance of the femoral nerve on ultrasound before injection of local anesthetic (  A ) and after completion of injection of local anesthetic (  B ) (shows swelling of the nerve). FA = femoral artery; FI = fascia iliaca; FN = femoral nerve; NP = needle path. 

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