Routine protocol of a non-trauma humerus entails:
single AP projection with the arm in external rotation
single AP projection in neutral position, a transthoracic lateral, and a distal lateromedial projection
two projections: one with the arm in external rotation and one with the arm in internal rotation
single AP projection and a single transthoracic projection
two projections: one with the arm in external rotation and one with the arm in internal rotation
Rationale: Non-trauma humerus will take two projections to include the entire long bone and both joints. The arm will be changed in position for each projection; one in external rotation and one in internal rotation.
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