What Is the Difference Between Normal, Healthy Joints and Arthritic Joints?

What Is the Difference Between Normal, Healthy Joints and Arthritic Joints?

Arthritis refers to more than 100 conditions that affect the musculoskeletal system, specifically, the joints. The joints are the parts of the body where bones connect. When arthritis is present, the joints may become inflamed, stiff, red, and painful. Rheumatoid arthritis is one type of arthritis classified as 'systemic,' meaning it can affect the entire body. Damage from RA may occur in tissues surrounding the joints including the tendons, ligaments, and muscles. In some patients, symptoms may extend to the skin and eyes, and internal organs including the liver, kidneys, heart, and lungs.