In Osteoarthritis, which sign is commonly seen at the distal interphalangeal joints?

In Osteoarthritis, which sign is commonly seen at the distal interphalangeal joints?

• A. Ulnar deviation
• B. Heberden's nodes
• C. Bouchard's nodes
• D. Boutonniere deformity

Answer: (B)

In osteoarthritis, the distal interphalangeal joints commonly show Heberden's nodes. These are hard, bony enlargements at the DIP joints caused by osteophyte formation and cartilage degeneration in the joint. They’re a classic finding for OA at the fingertips. Bouchard's nodes, by contrast, occur at the proximal interphalangeal joints, not the DIP. Ulnar deviation and boutonniere deformity are more associated with inflammatory arthritis like rheumatoid arthritis or tendon injuries, not typical OA changes. So the signs at the distal interphalangeal joints in OA are Heberden's nodes.

In osteoarthritis, the distal interphalangeal joints commonly show Heberden's nodes. These are hard, bony enlargements at the DIP joints caused by osteophyte formation and cartilage degeneration in the joint. They’re a classic finding for OA at the fingertips.

Bouchard's nodes, by contrast, occur at the proximal interphalangeal joints, not the DIP. Ulnar deviation and boutonniere deformity are more associated with inflammatory arthritis like rheumatoid arthritis or tendon injuries, not typical OA changes. So the signs at the distal interphalangeal joints in OA are Heberden's nodes.