We all know at least one person who suffers from osteoarthritis. The most common form of arthritis, it affects millions worldwide and a recent study showed that in a sample of 670 Sri Lankan females of 50 years or more, 20% showed signs of knee osteoarthritis*. Although the disease is well known for its effects on the knee, it can actually appear in any joint of the body – causing pain, stiffness and general discomfort for the sufferer. Let’s break it down, what causes osteoa