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Schematic illustration of the infiltration anesthesia used for wide-awake wrist arthroscopy. (a) Subcutaneous infiltration (blue) of 20 mL of 1% lidocaine with epinephrine; (b) intra-articular injection (dark blue) into the radiocarpal joint, between the scaphoid and distal radius, 5 mL of 1% lidocaine–epinephrine.
