Osteoarthritis (OA) is one of the most common joint diseases. It occurs when the protective tissue (cartilage) between bones wears down. Over time without this flexible cushion, joint damage occurs. People with OA often experience symptoms such as:
- Pain in the joint
- Stiffness in the joint lasting less than 30 minutes (most often in the morning)
- Tenderness when pressing on the joint
- Fluid build-up or swelling in the joint
- Trouble moving the joint fully
OA can occur in one or more joints. It is most common the knee, hip, hand, spine, and feet joints, but can affect any joint.
There are two types of OA:
- Primary – OA with no underlying cause
- Secondary – OA caused by another condition or event such as joint injury, surgery, or overuse
Knees and hips are where OA hits!