Which radiographic finding is a hallmark of OA?

Which radiographic finding is a hallmark of OA?

• A. Osteophyte formation
• B. Joint space widening
• C. Cartilage calcification only
• D. Increased muscle density

Answer: (A)

Osteoarthritis tends to produce bone changes at the joint margins as the cartilage wears away and the underlying bone roughens. The body responds by forming osteophytes, or bone spurs, along the periphery of the joint. On radiographs, these osteophytes are a classic, highly characteristic sign of OA, reflecting the reparative bone formation that accompanies degenerative cartilage loss. Joint space narrowing does occur in OA due to cartilage loss, but the presence of osteophytes is more distinctive and frequently highlighted as the hallmark radiographic feature. Cartilage calcification by itself is not a typical or defining finding of OA, and increased muscle density is not a radiographic manifestation of OA.

Osteoarthritis tends to produce bone changes at the joint margins as the cartilage wears away and the underlying bone roughens. The body responds by forming osteophytes, or bone spurs, along the periphery of the joint. On radiographs, these osteophytes are a classic, highly characteristic sign of OA, reflecting the reparative bone formation that accompanies degenerative cartilage loss.

Joint space narrowing does occur in OA due to cartilage loss, but the presence of osteophytes is more distinctive and frequently highlighted as the hallmark radiographic feature. Cartilage calcification by itself is not a typical or defining finding of OA, and increased muscle density is not a radiographic manifestation of OA.