Child has arthrtis and now has leg discrepancy does this mean her arthrtis is not well controlled?

NO: In the leg with arthritis - because of the inflammation there is increased blood supply and that leg may be longer than the normal one. I recommend seeing an acupuncture physician in addition to what you are doing as it makes a huge difference!

Call a Pediatrician: This child would best be examined and followed by a pediatrician to develop a treatment plan that might minimize the pain and avoid problems that may come from these conditions. The 'discrepancy' may be unrelated to the arthritis, but the combination merits attention. Do find effective help for the child. You'll both feel better.