Which sign is characteristic of Osteoarthritis at the distal interphalangeal joints?

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Prepare for the CMS II Rheumatology E1 Exam with our comprehensive quiz. Study using flashcards and multiple-choice questions, each with hints and explanations. Get ready for success!

Multiple Choice

Which sign is characteristic of Osteoarthritis at the distal interphalangeal joints?

Explanation:
Heberden's nodes at the distal interphalangeal joints are the classic sign of osteoarthritis in the fingers. Osteoarthritis causes degenerative changes with osteophyte formation, and these bony enlargements at the DIP are called Heberden's nodes. In contrast, Bouchard's nodes occur at the proximal interphalangeal joints, not the DIP; ulnar deviation at the MCP is more typical of rheumatoid arthritis due to inflammatory damage and ligament laxity; and Boutonniere deformity is a finger deformity seen with inflammatory conditions like RA, not OA. So the presence of Heberden's nodes at the DIP best indicates osteoarthritis in those joints.

Heberden's nodes at the distal interphalangeal joints are the classic sign of osteoarthritis in the fingers. Osteoarthritis causes degenerative changes with osteophyte formation, and these bony enlargements at the DIP are called Heberden's nodes. In contrast, Bouchard's nodes occur at the proximal interphalangeal joints, not the DIP; ulnar deviation at the MCP is more typical of rheumatoid arthritis due to inflammatory damage and ligament laxity; and Boutonniere deformity is a finger deformity seen with inflammatory conditions like RA, not OA. So the presence of Heberden's nodes at the DIP best indicates osteoarthritis in those joints.

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