Two points here.

• Arthritic changes' is not the same as 'arthritis'. Almost everyone will show arthritic changes on an x-ray when they reach 60 and above. But many people have full function and never have any pain. This normal aging, as shown on the x-ray, is not necessarily the cause of your pain.
• If you do have arthritis, exercise can help to improve your range of motion and increase your strength. When you do this, the pain is often much less.