if you clean it out again , i would use saline instead of hp, and flush it with a needless or curved tip dental syringe, when you wrap it, i would wrap it loosely with neosporin and sparsely with gause and maybe use thread instead of tape, so it is not completely deprived of oxygen. granted neosporin may not be the best treatment , but it is a broad spectrum antibiotic, and likely better than no antibiotic at all. you said you had a 40 watt uvb but you didnt say specifically what that was. he probably should have some D3, but i dont think that is the issue. you never really said what kind of cage he has ? hopefully not a homemade cage with galvanized wire? like kinyonga said, if it continues without improvement it will likely spread into a systemic issue, if it goes past his ankle then you you will probably have to amputate. at some point you will need to weigh his suffering against his likelyhood of improvement, and your desire to keep him alive. jmo