Theoretically you could do a test hatch, but I'm not sure I'd try it unless there was something outstanding about her you wanted to keep.
If her lower leg isn't bothering her, I'd leave it, if she's injuring it or dragging it and she's getting sores, amputation might be a good option.
If her lower leg isn't bothering her, I'd leave it, if she's injuring it or dragging it and she's getting sores, amputation might be a good option.