In the past, I have used Celebrex which were like a miracle cure for other injuries I have had but they didn’t even touch the elbow problem. 
The last lot I was on were Diclofenac 50mg which i was prescribed for a month. Within three days they very quickly got the problem down to  a manageable level but there was no further improvement after that. Rugby League-style injection or amputation are next steps on the list. 
Thanks for the Facebook “like” by the way ;)