I had 2 discs replaced in my cervical spine, C5/6.
Although I am so much better, I do get pain down my left arm and
headaches that wake me when I sleep.
I get injections which help about 2 to 3 times a year.
This may not sound good, but it is so much better than before.
My surgeon offered to remove the new discs and do a fusion, but as long as
the injections work, I see no reason. (At least at this point.)