Pain is the most common symptom of knee osteoarthritis (OA).

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In knee OA, the cartilage within the joint begins to break down and the underlying bone begins to change slowly and can get worse over time. In some cases, this causes reduced function and disability, and people can no longer do their normal daily activities or work.

Symptoms of knee OA may include:

• Pain or aching during or after movement or while sitting

• Stiffness, particularly when you first get up or after sitting for a long time

• Swelling or puffiness

• Loss of flexibility, you may lose the ability to bend and straighten you knee all the way

• You may hear crackling noises or feel a grating sensations when you move your knee

• Your knee may feel wobbly, as if it could “give out"

• Your knee might lock up or feel as if it is stuck