I had tennis elbow problems some years ago. It lasted over 6 months and threatened to stop me playing altogether, which, being as I do it for a living, caused me a lot of worry at the time. After 4 months of combined physiotherapy, stimulation current therapy and massaging with an ice cube (v. painful that last one) making matters worse, I got a cortizone shot which only helped temporarily. The problem soon came back and I was very worried.
Then I tried homeopathy. I can't remember the substance used, but symptoms were 80% gone within a matter of days. I know many people are skeptical of homeopathy, myself included, but on this occasion it worked for me.
Either way, good luck with your recovery.
I had a milder recurrence about 3 years ago and a good osteopath was able to help me using manipulation to free up blockages in my joints.