Trim the protruding bone?
Ouch!!!!
No matter how much you trim it, unless you pull the skin back from around it far enough and tie it off around the stump after "trimming the bone... the bone will protrude when the skin heals.
And it'll hurt the chicken worse that the dog.
I'd dab penicillin on it, let it dry enough to act as a poultice and a scab, and study the situation more.
Ouch!!!!
No matter how much you trim it, unless you pull the skin back from around it far enough and tie it off around the stump after "trimming the bone... the bone will protrude when the skin heals.
And it'll hurt the chicken worse that the dog.
I'd dab penicillin on it, let it dry enough to act as a poultice and a scab, and study the situation more.