To demonstrate the greater tubercle of the humerus, which of the following should be done?

To effectively demonstrate the greater tubercle of the humerus, the arm should be placed in a supinated position. This position allows for better visualization of the greater tubercle, which is located laterally on the proximal humerus. Supinating the hand promotes a more optimal alignment of the humerus in relation to the imaging plane.

When the arm is supinated, the greater tubercle becomes more prominent and can be clearly visualized during imaging or physical examination. This is particularly important in procedures where the identification of specific bony landmarks is necessary for diagnosis or intervention.

In contrast, positioning the arm in adduction or internal rotation would obscure the greater tubercle, making it less visible. Abduction, while it can provide some visibility, is not as effective as supination for highlighting the tubercle's prominence and orientation. Overall, supination is key to achieving the best view of the greater tubercle during imaging studies.