A Triple-Masked, Randomized Controlled Trial Comparing Ultrasound-Guided Brachial Plexus and Distal Peripheral Nerve Block Anesthesia for Outpatient Hand Surgery
Figure 1
Short-axis sonograms of ultrasound-guided median nerve block at two time points: preinjection (a) and postinjection (b); arrows identify the needle; N = nerve; FCR = flexor carpi radialis muscle; FDS = flexor digitorum superficialis muscle; = injectate solution.