I've seen a bunch of folks asking about cannabis for pain and I'd like to share what helped me.
I found that before my knee surgeries the only thing that would help me walk was putting my cannabis cooking oil on my knees. It takes the swelling down greatly. I also read in a recent West Coast Cannabis article about the cannabinoid receptors we have in our bones, skin, and joints and how the substances in cannabis interact with body to soothe pain in arthritic people. There is a company using the same thing for inflammation relief.
It also helped my mother in law who isn't a smoker and was about to have her knees replaced. I put some on her knees and she was able to walk around San Francisco and visit the Ferry Building food/gourmet food complex.
It also helped my wife's elbows and wrists before and after carpal tunnel surgery.
Follow the directions on making special butter and oil and instead of making cookies, put some on your knees.