Which foot projection demonstrates the metatarsals (third-fifth) without superimposition?

The AP oblique projection in 30-degree medial rotation is the correct choice for demonstrating the third to fifth metatarsals without superimposition. This projection effectively positions the foot in a way that allows for optimal visualization of the metatarsals on the lateral side of the foot.

When the foot is in a 30-degree medial rotation, the third through fifth metatarsals are separated from one another, reducing overlap and providing a clearer view of their individual structures. This is particularly important for accurate interpretations in diagnostic radiography, as superimposition can obscure important details about fractures or other pathologies.

In contrast, the AP axial projection primarily focuses on the alignment of the entire foot and may not provide the necessary angle to avoid superimposing the metatarsals. The lateral projection, while useful for assessing the overall foot structure and certain pathologies, does not specifically enhance the visualization of the metatarsals in the same way as the oblique projection. The AP oblique projection in 30-degree lateral rotation can demonstrate the first and second metatarsals more effectively, but it does not address the visualization of the third to fifth metatarsals as well as the medial rotation does.