I had MRI's on both knees and ended up having Osteonecrosis in the knees, hips and shoulders. My situation was complicated by steroids along with the Levaquin.

We don't know which one really contributed to the necrosis but the steroids are probably the more likely culprit. The problem is I was only on the steroids for 9 days along with the  Levaquin. It remains a mystery!