Lots. I don't know how many. Most have been on one hen that I adopted after her entire flock was killed by a predator. She has the most stubborn case of bumblefoot on both feet I've ever encountered. I'm still operating on her after a year and a half.
Most of my bumblefoot patients have had mild case as you describe your hen may have. I first soak the patient's feet in very warm, just this side of hot, water with Epsom salt and Betadine for 30 minutes prior to surgery.
Then I wrap her in an Ace bandage to immobilize her wings, and I start pulling the scab and infected matter out of the foot. Try to get as much as you possibly can.
Then I spray with Vetericyn, dab some antibiotic ointment on it, lay a Telfa pad, cut to fit, on it and bandage with Vet wrap. If you do a good wrap, no dirt should get into the wound and it's not necessary to confine the patient.
With light cases, I check the wound in two days, and if it's well sealed up, I spray a final time with Vetericyn and that's it, except to check in a few more days to make sure the infection hasn't sneaked back.
Serious cases get checked each day from surgery forward, with a soak at least every other day. I have another patient that had a lot of swelling adjacent to the original wound, so she's been on an antibiotic and is responding well.
Light cases heal within days. Serious cases can take a month or more.
