Lateral, AP and Oblique views of the right ankle show orthopedic hardware and healed bimalleolar fractures. No tarsal coalition is demonstrated. The posteroinferior aspect of the sustentaculum tali appears somewhat prominent (arrows).

Sagittal and coronal sections from the PedCAT scan clearly demonstrate non-osseous talocalcaneal coalition involving the posterior subtalar joint, with irregularity of the articular surfaces, narrowing of the joint space, and subchondral sclerosis (arrows).

Lateral, Oblique and DP views of the right foot show a fracture in the more posterior screw through the posterior subtalar joint (arrow). The other screws appear intact. No bony fusion can be seen.

Sagittal and coronal sections from the PedCAT scan demonstrate additional fractures in the more anterior screw through the posterior subtalar joint (arrow), and in a calcaneal screw connected to a small lateral plate (double arrow). Bony fusion is also demonstrated in the lateral aspect of the subtalar arthrodesis (open arrow).

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Lateral and Axial views of the right hindfoot show a fracture of one orthopedic screws. The plain films are indeterminate for bony fusion.

Sagittal and coronal sections from the PedCAT scan again show the fractured screw. The PedCAT scan demonstrates that there is no bony fusion of the arthrodesis.