Case 10

The presence of a corticated ossicle with bone marrow edema adjacent to the ulnar styloid process somewhat complicates the analysis of the ulnar attachments...

Given the normal size of the styloid process, the ossicle likely represents an accessory ossicle termed the os triangulare. Other accessory ossicles in the region include the persistent ulnar styloid ossicle, and the lunula. Alternatively, this could represent a chronic ulnar styloid process fracture.

If this is an accessory ossicle, then it is unclear if the styloid attachment of the TFC would normally attach to it, or the styloid process itself. In this case the styloid attachment is not well seen.

Regardless the foveal attachment is not seen at its expected location and is likely completely torn.