Another tip for exercising with arthritis is to focus on strengthening the muscles surrounding the joint that has arthritis. Most likely, if a joint has arthritis, the surrounding muscles are weak and are not providing adequate support to the joint.
Without adequate support, every time you try to move and use that joint the muscles are not working to create smooth movement, causing more pain and stress to go through the joint.
For example, if you have hip arthritis, each time you take a step the muscles around your hip are not strong enough to keep your pelvis aligned. This results in more stress to the joint as you limp or walk with some other compensatory movement.
The stronger your muscles are the more stable and comfortable your arthritic joint will be. A stable and comfortable joint allows you to move around and do more of what you love to do.