So I researched a bit more and found that many use Comfrey salve to remedy this. So I ordered Comfrey Roots from Crearome.se, a bottle of organic olive oil and Lavender EO.
I have found a recipe on the net which resonated well with me (there are many recipes out there).
NOTE!!! I am using oven only because its winter! Otherwise it is much better (and more sustainable) to infuse the oil in the window sill exposed to sun for 2 weeks (turning the jar every day to mix the oil)
Che Guebee Apiary Comfrey Salve with a touch of Lavender - I will apply it to my sore elbow twice a day until it doesnt hurt anymore. According to the reviews on the net the tennis elbow is healed after only 3 days. Will make sure to update this post.
Comfrey is one of the most important plants in my opinion. It is great for making liquid fertiliser from its leaves and its flowers offer lots of nectar to bees and is great for healing many skin and bone problems. I already planted 5 Comfrey plants for the next year.