Fig 2.

Osseous changes in a study subject. A. Panoramic radiograph showing poor visualization of the right and left condylar heads. B. Sagittal CT view of the left condyle, showing osteophyte formation (white arrow), a subcortical cyst (open arrow), and surface erosion (white arrowhead). Sclerosis of the fossa (black arrow) and eminence (black arrowhead) is also visible. C. Axially corrected coronal CT of the left condyle showing surface erosion (white arrowhead) and a subcortical cyst (open arrow). Sclerosis of the fossa (black arrow) is also present. D. Sagittal proton density-weighted magnetic resonance image (MRI), taken in the closed-mouth position, showing osteophyte formation (white arrow) and a subcortical cyst (open arrow). E. Sagittal proton density-weighted MRI, taken in the open-mouth position, showing osteophyte formation (arrow) of the condylar head.