Purpose: The purpose of this study is to examine the clinical effects and results of lower-extremity surgery under ultrasound-guided nerve block; time required for nerve block. anesthesia onset time. duration of anesthesia. duration of analgesia. https://www.chiggate.com/turbo-air-m3f72-3-n-78-wide-m3-series-reach-in-freezer-featuring-three-solid-doors-energy-star-online-now/