I recently (2-3 weeks) started vaporizing high cbd hemp flower, and my hips and knees have definitely improved.
I'm a long time ent and high THC cannabis helped me deal with pain by making me just care less that I hurt, CBD actually seems to lessen my pain. I also think that whole plant is the way to go for effectiveness and price.
I would talk to your current doctor about it, if he's open to mmj than he may give you a letter of recommendation. You can read more about it
https://dr-weedy.com/medical-marijua...san-francisco/