No it just went away after he stopped walking. I dont know what else I can give or do. I tried splinting, draining with needle, antibiotics, linament, trying to make him put weight on in and helping him move, nothing has helped.
Sounds like there is still a core inside. Try the epsom salt soaks, that might bring the core to the surface so you can dig it out. Even if you can only do it once or twice a day.