I have a torn meniscus. I bought a 4oz jar of CBD about the size of a Noxzema jar's worth. It was very expensive ~$130. I have been trying it for over a month and frankly it doesn't work. I noticed no relief. I asked my Dr about it and he said it works on cats and dogs but not humans. He said buy the real thing from "Wille Nelson's Place".
I also agree with @Not at the table Karlosabout the THC edibles. It seems to me that they are not very well regulated. Some don't do anything. The others make you comatose. Be careful.