The word arthritis literally means "joint inflammation." Arthritis refers to a group of more than 100 rheumatic diseases and other conditions that cause pain, stiffness, and swelling in joints.

Rheumatoid arthritis is a disease that damages the lining surrounding our joints while also destroying our bones, tissue, and joints over time.

Osteoarthritis is a progressive condition that slowly damages the cartilage surrounding the ends of bones and is common in the hip, knee, and spine.