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  1. Before viewing Calebs work I wasn’t very aware of the exact differences and progression of Rheumatoid and Osteoarthritis, but after observing the project and reading the paper I have gained a clear idea as to what those differences are. Right away it’s made clear Caleb knows what he’s talking about as an overview of the differences are brought forward just before going in to look closer at each of the four steps of RA and OA. The main differences between them are the causes as RA tends to occur from an attack on the joints from the immune system and OA happens over time with the joints wearing down. Then we see the steps of each where step one of RA is inflammation of the joints synovium resulting in too much synovial fluid swelling and causing pain. Step 2 is the pannus stage where there is cartilage loss as the pannus covers it. Step 3 involves connective tissue restricting joint movement. Step four is when all articular cartilage is lost and the bones fuse together resulting in immobilization. That sums up the steps of RA as seen in the project and essay, both are extremely well done and detailed. The steps of OA consist of bone spurs (step 1), joint pain with more spur growth (step 2), carriage erosion (step 3), and full cartilage erosion resulting in bones grinding and severe pain (step 4). This presentation clearly showed the differences between normal joints, Osteoarthritis joints, and Rheumatoid arthritis joints.

    Kazden Haugen

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