Understand the disease, causes and treatments.
Types of Arthritis
Learn about OA, the most common type of arthritis.
Learn about the rheumatic conditions that affect children.
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Browse the glossary by selecting a letter or by entering an arthritis-related term:
Lateral collateral ligament (LCL)
The ligament that runs along the outside of the knee joint, providing stability to the outer (lateral) part of the knee.
Tough bands of connective tissue that attach bones to bones and help keep them together at a joint.
The lower back, composed of five vertebrae.
An autoimmune disease that occurs primarily in women and affects many organs and organ systems, including the skin, joints, heart and blood vessels, kidneys and brain.
A type of white blood cell involved in the immune system.
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Looking for a quick definition of a term?view the glossary