What leg workouts can you do when you have arthritis?

Depends. It really depends on where the arthritis is located and what type of arthritis you have. For osteoarthritis of the knee, typically we encourage strengthening of the muscles crossing the knee which are the quadriceps and hamstrings. We also want to make sure that one group is not overpowering the other and causing malalignment. In ra, we wait until the inflammation is down before exercising.