question: Hi I was diagnosed with arterial bilateral osteonecrosis 2 years ago, I had hip replacement surgery in November 2years on my right hip because it was the worst on at that time, now I am having lower back pain some times very painful the pain is mostly on my right side could this be because my left hip is getting worse, my surgeon told me the left hip may last 6 months to a year 2 years if I was lucky this November will be 2 years and I can tell it is getting worse my biggest problem is the back pain I m having on my right side