I agree. In nature, only the strong survive, and human's can't always fix everything.Totally agree with Bluebaby - I've come to find out (in my very minimal hatching experience) that helping is not the way to go for ME. If a chick can't make it on its own there's a reason for it. I have helped and none that I've helped hatch survived more than a day or two.
Trying to fix a leg or some other issue close after hatching - I would try but not get my hopes up too much. I learn alot thru trying to fix things so I don't consider it a bad thing even if I can't fix it. It's nature - nature produces abundantly because it knows not everything will survive.