In a diagnostic lateral humerus radiograph, which three anatomical structures should be demonstrated?

In a diagnostic lateral radiograph of the humerus, it is essential to visualize specific anatomical structures to ensure accurate assessment and interpretation. The proper demonstration of the superimposed humeral epicondyles confirms that the imaging is appropriately aligned in the lateral view. This positioning allows for clear evaluation of the humeral structure and its relationships with surrounding anatomical features.

Additionally, having the humeral head superimposed over the greater tubercle establishes the correct positioning of the shoulder joint, ensuring that the proximal humerus is properly displayed. This configuration aids in identifying any potential abnormalities or fractures that may occur around the shoulder joint.

The visualization of the lesser tubercle in profile on the medial side further enhances the diagnostic value of the image, allowing clinicians to assess conditions related to the rotator cuff and other shoulder structures effectively. Collectively, these three structures provide a comprehensive view of the lateral humerus, which is vital for accurate diagnosis and treatment planning in upper extremity issues.