PATHOLOGY

Detailed explanation-1: -The classic inflammatory arthritis, rheumatoid arthritis, starts in the lining tissue of the joint, the synovium. This lining thickens and cells within it, and within the joint fluid, release chemicals that cause the signs of inflammation – swelling, redness and heat.

Detailed explanation-2: -Rheumatoid arthritis can cause pain, swelling and deformity. As the tissue that lines your joints (synovial membrane) becomes inflamed and thickened, fluid builds up and joints erode and degrade. Rheumatoid arthritis is a chronic inflammatory disorder that can affect more than just your joints.

Detailed explanation-3: -Osteoarthritis is the most common form of arthritis. Some people call it “wear and tear” arthritis.

Detailed explanation-4: -In these diseases, the immune system doesn’t work properly and releases inflammatory chemicals. The resulting inflammation attacks joint tissues and can cause joint swelling, increased joint fluid, cartilage and bone damage, and muscle loss. Nerves in the joints are also activated, causing pain.