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- Discussion:
     - used to show ulnar variance;
     - technique:
           - shoulder is abducted 90 deg, the elbow flexed 90 deg, and forearm is held in neutral rotation;
     - AP View:
            - patient places the forearm flat on the cassette w/ central beam directed at center of the carpus;
     - Lateral View:
            - patient is standing w/ ulnar border of forearm flat on the cassette;
            - the central beam is directed at the center of the carpus