In the hand, which joints are commonly affected by OA leading to Heberden's and Bouchard's nodes?

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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

In the hand, which joints are commonly affected by OA leading to Heberden's and Bouchard's nodes?

Explanation:
OA of the hand classically affects the distal and proximal interphalangeal joints. The bony enlargements seen at these joints are Heberden's nodes (at the DIP) and Bouchard's nodes (at the PIP). Because both the DIP and PIP are commonly involved in hand OA, choosing the joints that include both of these areas best explains why these two types of nodes form. MCP joints are less typical for OA in the hand, while the thumb base (1st CMC) can be involved but isn’t related to these nodal findings.

OA of the hand classically affects the distal and proximal interphalangeal joints. The bony enlargements seen at these joints are Heberden's nodes (at the DIP) and Bouchard's nodes (at the PIP). Because both the DIP and PIP are commonly involved in hand OA, choosing the joints that include both of these areas best explains why these two types of nodes form. MCP joints are less typical for OA in the hand, while the thumb base (1st CMC) can be involved but isn’t related to these nodal findings.

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