Glossary
Browse the glossary by selecting a letter or by entering an arthritis-related term:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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.
Ligaments
Tough bands of connective tissue that attach bones to bones and help keep them together at a joint.
Lumbar spine
The lower back, composed of five vertebrae.
Lupus
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.
Lymphocytes
A type of white blood cell involved in the immune system.