What aspect of the shoulder should be included in the collimation for the internal rotation view?

When performing an internal rotation view of the shoulder, it is important to include the shoulder region comprehensively in the collimation. Including the area around the shoulder joint provides a complete view of the anatomy relevant for diagnostic purposes. This encompasses the shoulder joint itself plus the deltoid tuberosity area.

The deltoid tuberosity, which is located on the humerus, is especially significant as it acts as an attachment point for the deltoid muscle, and it provides important anatomical context when assessing the shoulder. Including this area in the collimation ensures that any pathology related to the deltoid muscle and the surrounding structures can be evaluated effectively.

In contrast, restricting collimation to just the shoulder joint would limit the view and potentially miss important surrounding anatomy. Additionally, including the soft tissues to the elbow or just focusing on the humerus would not provide the comprehensive perspective needed for an accurate assessment of the shoulder's condition and related structures. Thus, the correct choice ensures that both skeletal and soft tissue elements relevant to the internal rotation view of the shoulder are adequately visualized.