Please refer to the information in the thread you already posted. It should help you properly care for the hen's foot. Click on the links I provided on that post for information on how to treat it. There is a website that contains the treatment protocol and there is also a video that goes into detail on treatment (as well as an article on how to wrap the foot).
If you need further information, it will be extremely helpful for you to get a picture of the foot and post it in that thread: