In osteoarthritis, which crystal deposition is associated with cartilage changes?

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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 osteoarthritis, which crystal deposition is associated with cartilage changes?

Explanation:
Cartilage damage in osteoarthritis is associated with deposition of basic calcium phosphate crystals in the joint tissues. These calcium phosphate crystals, including hydroxyapatite, can accumulate within articular cartilage and periarticular structures, contributing to matrix disruption, chondrocyte activation, and inflammatory mediators that drive cartilage degradation. Because this form of crystal deposition specifically involves calcium phosphate, it best explains the cartilage changes seen in OA. Other crystals listed are linked to different diseases (for example, monosodium urate with gout; oxalate with stone-forming conditions), so they don’t fit the OA cartilage-change pattern as well.

Cartilage damage in osteoarthritis is associated with deposition of basic calcium phosphate crystals in the joint tissues. These calcium phosphate crystals, including hydroxyapatite, can accumulate within articular cartilage and periarticular structures, contributing to matrix disruption, chondrocyte activation, and inflammatory mediators that drive cartilage degradation. Because this form of crystal deposition specifically involves calcium phosphate, it best explains the cartilage changes seen in OA. Other crystals listed are linked to different diseases (for example, monosodium urate with gout; oxalate with stone-forming conditions), so they don’t fit the OA cartilage-change pattern as well.

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