Oh Bram, how complicated & frustrating for you!!
I know nothing about spine issues sorry! Right now you need a team of very knowledgeable specialists. The only thing I can think of is my P.M. Dr. has me
on Vit. D3 drops and magnesium citrate for bone support. Because I'm developing osteopenia (bone shrinking and contracting in my CRPS hand).
I know you need WAY bigger help than that &
I really want to see you get it!