Hello,
I think that it is time for some diagnostics. I would recommend an Xray and some blood work. In some cases I am also concerned about things like lungworm, round worm, or toxoplasmosis.
If you haven’t done an antibiotic trial you can also try that. The problem is that you are trying to treat clinical signs and not identifying the underlying cause.







For all cat with fractures I recommend very (VERY!!!) strict cage rest for 4-8 weeks. I know it sounds harsh but a cage where they can rest and all of mine have healed. Good luck.