Oh dear. That poor thing. How old is your pullet?
Are you sure she hasn't broken a bone somewhere, and there are no other evident/possible injuries?
If there's no indication of anything else going on, most injuries like this that we see are either Merek's Disease or vitamin deficiency (curled toe paralysis I think is the term you'd look up to get more info). If it's Merek's you've got bigger problems than just this one bird, but no way to tell without laboratory testing. In the meantime, try treating for vitamin deficiency (look up curled toe or curled toe paralysis using the search bar on this site for the exact vitamin they're usually deficient in and how to treat it). If the treatment works, that what she had. Could take a month or more for her to improve. If further symptoms come to light or she continues to decline, let us know, it may indicate something else.
Others could give you a more complete answer, but I didn't want your post to go unanswered, and it's been at least 45 minutes since you posted.