When evaluating a lateral image of the thumb, which three items should ideally be demonstrated?

The ideal lateral image of the thumb should demonstrate three key aspects to provide a clear and accurate representation of the anatomy. The inclusion of the trapezium is critical, as this bone is the base of the thumb and its visualization helps in assessing the entire thumb's alignment and any potential joint issues.

The thumbnail should be displayed in profile because it allows for an optimal view of the thumb's contour and provides important information regarding its positioning. Finally, the concave anterior surface of the proximal phalanx is essential for demonstrating the anatomical relationship between the proximal phalanx and the metacarpal, which is crucial for evaluating joint health and any deformities.

In summary, the inclusion of these three aspects ensures that the image offers a comprehensive view of the thumb's anatomy, facilitating better diagnosis and assessment.