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Infiltration anesthesia applied to a patient planned for open triangular fibrocartilage complex repair. A solution of 40 mL of 1% lidocaine with epinephrine was administered subcutaneously 30 minutes preoperatively. The dotted lines mark the area of infiltration, where skin pallor can be seen as a result of the epinephrine vasoconstrictive effect. In addition, 5 mL lidocaine with epinephrine was injected into the ulnocarpal joint, between the ulnar styloid and the triquetrum.
