Elliot had MBD when I got him.
If you gently pinch your skink's jaw you can feel if it's soft or not.
If it's rock hard then you're fine, if it's soft then you may have a problem.
I fed him small portions of a well-rounded diet every other day for awhile, adding calcium powder every time. Also crushed egg shells and sprouts are good to use!
I got a UVB and UVA lamp and didn't handle often, and now his bones are strong as steel!
Hope I could help...