Just anecdotal, I know, but I used D8 THC after my shoulder surgery and recovered about 2x faster than my doctor originally expected. I only had to go to like 6 PT appointments before I was told I didn't need it anymore.

I'm sure that some of that was because I was in shape prior to the surgery, but at least the pain relief contributed to me doing my PT homework to a greater degree than if I hadn't been using THC.

I also only needed opiates for 4 days post surgery.