Hi,
So sorry for the late response, it's been such a busy week. If the cut is fairly superficial, you don't need to bandage or cast the foot. Frankly, there's really no way you'd ever be able to keep it on - chins chew stuff like that off as quick as you put it on. Once when we had a chin with a broken leg, my vet split a 3cc plastic syringe and then wrapped that with fabric tape - that did hold for 6 weeks.But of course that's overkill for the situation you have here.So apply an antibiotic ointment faithfully for a few days, keep the floors clean and covered, and then check the foot bi weekly or so to see if you need to keep moisturizing the footpad.
I wrote an article for the Chin Club Magazine on bumblefoot - you can access it from the archives if you're a member. If you can't find it, let me know and I can email it to you. Here's a paragraph from that article:
"Bumblefoot is defined as an infection and/or inflammation of the footpad and connective tissues of the foot. Often a callous will grow on the bottom of the feet, and a crack will form or ulcerate. Feet are particularly vulnerable to bacterial contamination (with bumblefoot, this is usually Staphylococcus aureus) and can invade this area, causing the inflammation and a resulting infection."
I'm still short on time here, but let us know if you have more questions. How is your chin doing?
Best wishes, Lori