Your wrist & finger stiffness is likely due to inflammation, and there are ways to deal with that which you may not have considered. I have been dealing with this inflammation issue for almost a year, and mine is because of lyme disease. I have had a slow, steady recovery, and I'm in much better shape in the last couple of months. One thing that made a huge difference is acupuncture. I went once a week for several months, then had about a six-week hiatus in my treatments due to the shutdown. I resumed the treatments several weeks ago, and that was then things really started to come together. My hands, which had formerly looked like two purple balloons, now look pretty normal. More importantly, the pain is greatly reduced, and they are fully functional.
I have been doing other things for this issue - like treating the underlying condition - but I think that the acupuncture treatments have had the most noticeable effect on the inflammation & pain. I also have been getting osteopathic manipulation to enhance lymphatic system function, which I think has helped as well. All the doctors involved in the process encouraged me to get back into my weight training program as soon as my hands could function well enough, which I did. This was when I really turned the corner in my recovery.
I think that your yoga is probably doing the same thing for you, and I wish that I had thought of that a long time ago. ( I probably could have done yoga even when my hands were a total mess, and this probably would have given me relief with the pain & inflammation in other parts of my body.) The big trick is to keep the body fluids moving, and not pooling in the tissue. Congrats on sticking with the yoga, and if you do decide to try the acupuncture and/or OM, let us all know how that works for you. I would extend this same recommendation to the OP for the neck problem. Sometimes these alternative treatments can get you over the hump while you're dealing with the nuts & bolts of the underlying problem. Best of luck to both of you guys with your recovery.
I'm sure they became inflamed but I'm pretty sure my finger issue was from some sort of hyper extension and I feel like I may have folded, pinched or tore the cartilage in my knuckle.
I crack my knuckles all the time because they get stiff and hurt. Leading up to the injury my middle finger was stiff and wouldn't crack for a few days so I forced it and boy did it crack. The pain from the stiff joint went away for a while but I got pain if I pressed something hard with that finger or tried to go in to the range of motion that cracks my knuckles.
I left it alone for a few weeks and the condition stayed the same.
When I began stretching the finger and mobilizing the joint (because I couldn't stand nothing anymore), my range of motion improved rapidly, I got to the point where I could crack the knuckle again and in about 3-4 days the pain was much less, after 2-3 weeks it was pretty normal (for me).
My wrist was pretty similar, it cracks all the time but there are lots of bones in there and several that are pretty easy to break. My wrist always bugs me, I forget what I was doing but I was repeatedly lifting my body weight with my left hand bent back at an odd angle putting pressure on my wrist. This made my wrist stiff and sore. I had some difficulty cracking it, then a very loud crack. There was pain but it went away if my wrist was in a neutral position but suddenly holding a rifle in a standing position, my wrist didn't want to bend enough to grasp the forend. The stiffness, weakness and pain continued until I started stretching and mobilizing my wrist. It's getting better, maybe 75% now but it was 5% and not improving a while ago. I was thinking I might have broken something but rest should have fixed that more than moving everything.
Blood flow, lymphatic system, or letting a bit of mangled cartilage go back to it's intended position, I'm not sure which one did it but it was moving and stretching that allowed healing to happen.
I did some yoga years ago and it did help improve my flexibility and reduced some of my aches and pains. I didn't stick with it but once my back issues started, I used some simple and easy yoga poses to mobilize and stretch my back after my chiropractor freed it up.
Doing a full yoga routine is probably better but I just do the bit that works on what is ailing me and only when my back is feeling stiff.
The one thing I can recommend 100% is if you have back or neck stiffness or pain, get it checked out by a good chiropractor sooner than later. Finding a good chiropractor is not always easy. I was referred by a friend whose father was a chiropractor for an NHL hockey team. Her father has passed away but he was one of the best so she knows a good chiropractor. Without her, who knows what I would have got? By my second visit my back was about 90% freed up and by my third it was moving like it hasn't since high school. I should have started probably 4-5 years earlier. I was stupid but luckily that doesn't seem to have left me with permanent damage.
If you don't think you are at chiropractor stage yet, try some yoga, it might help and it's near zero risk.
Most of the time when I hear about back surgeries, the story includes years and decades of dealing with pain and stiffness with poor or nonexistent chiropractic care. If a little yoga and some chiropractic care might prevent that, that's about the cheapest medicine ever.
Even if you get to the point of surgery, trying some of these techniques to see if they can help your healing is still probably a good idea.