Both of my legs atrophied when I was on crutches with a broken ankle.
Post the X-ray! Here's mine:
I had a month in a cast, a month in a boot, and then I was riding on a trainer for a month before I ventured forth. Recovery took a lonnnnnng time. It was almost 3 years before I could stand up on the pedals to pound up a hill for an extended period of time.