What radiographic finding would support a ringbone diagnosis?

• A. No radiographs used
• B. Radiographs show sole bruising
• C. Negative radiograph
• D. Positive radiograph

Answer: (D)

Ringbone shows up on radiographs as bone changes around the affected joint, typically periarticular osteophyte formation that can encircle the joint—often described as a ring of bone around the pastern or coffin joint. When a radiograph reveals these ring-shaped bony projections and related joint changes, it supports the diagnosis because it reflects osteoarthritis and abnormal bone remodeling associated with ringbone.

Sole bruising would not appear on radiographs, and a negative radiograph provides no evidence of these bony changes. If no radiographs were taken, there’s no imaging evidence to support ringbone. Hence, a radiograph that clearly shows ring-like bone growth around the joint is the finding that supports the diagnosis.