Spradle leg is usually when they first hach and their legs go out from side to side and they sort of do the splits - could be one leg or both - can be "fixed" by tying a rubber band/string from one leg to the other so they can hold their legs under their body until they get the hang of it - usually just a few days. At one month old, I'm not sure we're talking about the same thing. How does the chick get around? Is it one leg or both and what exactly happens when it tries to walk. If it is doing the splits thing, you could try tying the legs closer together. Or, it could have a deformed leg or an injury that didn't heal properly. Hard to tell from your first post. Please give a little more info and we might can help.