How is your chicken going? Any pictures? You could create an small 'X' incision into the area of the foot where the swelling is using and scalple. Then operate from there.
I have been dealing with one bumble foot case for 10 months now, swelling can take a while to go down. When you remove the scab, do you try to get the core out, if there is one and any other puss?
Treatment includes soaking for 10 minutes in Epsom salts followed by removing the scab, getting...