Which radiographic projection is best for visualizing a middle facet talocalcaneal coalition?

• A. AP view
• B. Harris-Beath
• C. Lateral view
• D. Oblique view

Answer: (B)

Visualizing a middle facet talocalcaneal coalition hinges on choosing a projection that opens the subtalar joint and minimizes overlapping of the talus and calcaneus. The Harris-Beath projection is a specialized hindfoot oblique view specifically designed to reveal the talocalcaneal joint plane, making coalition lines along the middle facet more conspicuous. Because the coalition most often resides in the middle facet, this projection provides the clearest radiographic appearance compared with standard AP, lateral, or other oblique views, which can obscure the small coalition or be overwhelmed by superimposed structures. If there’s a suspicion of a middle facet coalition, the Harris-Beath view is the best choice to visualize it.