After viewing this presentation, the participant should be able to: Discuss the basic fundamentals of ultrasound physics and instrumentation; explain the advantages of using ultrasound-guided nerve block techniques; identify the key ultrasound images of the femoral and sciatic nerves; demonstrate techniques for performing ultrasound-guided lower extremity nerve blocks (femoral, sciatic, saphenous). An enclosed CME Quiz ($25.00 processing fee) can be submitted to Gulfcoast Ultrasound Institute for 2.0 AMA Cat. 1 CME credits, if needed. All AMA Category 1 credits are acceptable for ARDMS and ARRT (Cat. B only) requirements.